Simple Trick to Remember Values of Sin, Cos and Tan Functions for angles 0, 30, 45, 60 and 90 Degrees

If you are studying mathematics, you will has to use mathematical functions line sin, cos, tan etc. These trigonometric function are used in many other subjects like physics also. Functions sinx, cosx and tanx takes angles as input. Angles 0, 30, 45, 60 and 90 degrees are most commonly used angles values. Thus most students will have to rememeber the values of sin0, sin30, sin45, sin60, sin90, cos0, cos30, cos45, cos60, cos90, tan0, tan30, tan45, tan60 and tan90. If you know values of sinx and cosx you can find value of tanx by dividing sinx by cosx. tanx=sinx/cosx.

Here is a simple trick to remember all the above values. This is a simple and easy trick to remember the values of trigonometric functions sinx, cosx and tanx for angles (in degrees) 0, 30, 45, 60 and 90. The following image will tell you how to get the values of sinx and cosx function for above values of x in degrees in 3 simple steps. To get tanx, just divide sinx by cosx. Since the image is self explaining, i am just adding the image below.

mathematics, maths, trick, calculate, remember, values, trigonometric functions, 0, 30, 45, 60, 90 sinx cosx tanx sin cos tan
trick to remember values of sinx, cosx functions

Top 19 Weird Place Names in the World

Some place names are really strange and some are funny too. Also there are some stupid place names. For the sake of decency, i won't mention those indecent place names. But i will tell you about some weird but decent place names. Some of those bizarre place names are listed below. You may also watch the video.





  1. Pooh
    Pooh or Poo (also spelled as Puh) is a small town in Kinnaur district, Himachal Pradesh, India. The name of this place have same spelling as the exclamatory word used to express used to express disgust, impatience or contempt.

    funny, weird, strange, bizarre place names pooh in India
    Pooh Milestone
  2. Husband
    This funny named place is from Somerset township in Pennsylvania state of united states of america.
    Weird and funny place names in USA, Husband Pennsylvania, Somerset township
    Husband from Pennsylvania
  3. Lonelyville
    Lonelyville is a small beach community located in the western end of Fire Island in the Town of Islip in Suffolk County, New York, United States. It seems the people in Lonelyville are feeling lonely.
    weird and bizarre place name lonelyville
    Lonely Lonelyville from Fire Island
  4. Condemned Bar
  5. Condemned Bar is a former settlement in Yuba County, California. It lay at the confluence of Dobbins Creek and the Yuba River 3 miles south-southeast of Dobbins, at an elevation of 548 feet.
    Condemned bar weird and funny place name
    Condemned Bar
  6. HellHell, or Hiland Lake, is an unincorporated community in Putnam Township of Livingston County in the U.S. state of Michigan. I don't understand what made them name the place so.

    Hell - weird and funny place name
    Hell in America
  7. Oatmeal
    Oatmeal is an unincorporated community in Burnet County, Texas, United States. Do the inhabitants eat only oats?
    Unusual bizarre place name in US
    Oatmeal from USA
  8. SandwichSandwich is a town in Barnstable County, Massachusetts, United States having about 20,000 population. Who is so fond of sandwich there?

    Strange weird place names sandwich
    Sandwich !
  9. BoringBoring? Yes it is really boring. Boring is an unincorporated community located in Clackamas County, Oregon state, United States. If you are boring, it is the right place to go.

    weird unusual place names.
    Boring
  10. Bird in HandBird-in-Hand, Pennsylvania is a census-designated place in Lancaster County, Pennsylvania, United States. The place is named for a picture on an old hotel's swinging sign.

    funny place name bird in hand bizarre place name bird in hand
    Bird in Hand
  11. Happy Land
    If you are done with boring, you may go straight to Happy Land. Happy Land is also in United States. Happyland is an unincorporated community in Pontotoc County, Oklahoma, in the United States.

    Happy Land weird bizarre place names
    Happy Land from the same country with Boring

  12. Nowhere Else
    Nowhere else you can see such a place except in Australia. I am talking about Nowhere Else, not nowhere else. It is Nowhere Else, a place in Australia.

    Nowhere else strange place name weird place names
    Wanna go Nowhere Else?
  13. Erode
    We are not talking about erosion. Our concern is about Erode. Yeah, the proper noun Eorde, not the verb. Erode is a place in Tamil Nadu state of India.

    Erode weird place names, funny place names, bizarre place names
    Erode Junction
  14. Accident
    It may not be an accident to name the place so. Actually, it is heard that it was an accident which made people name the place so. Whatever, isn't it funny to hear, 'Welcome to Accident'?
    weird place name Accident name board
    Accident
    Accident weird unusual place names
    Hearty welcome to Accident!

  15. Pity Me
    What a pity! Pity Me is a suburban village of Durham, England.
    Pity Me unusual funny place names bizarre place name
    Pity Me, England
  16. Kala Bakra
    Kala Bakra means black goat in Hindi. There is a place named Kala Bakra in India. Kala Bakra village comes under the Bhogpur development block of Jalandhar. Jalandhar is a district in the Indian state of Punjab.

    Kala Bakra

    Kala Bakra
  17. Why
    I am wondering Why they named Why? Why Why is named so? Why is a tiny unincorporated rural community in Pima County, Arizona, United States.

    why unusual place name funny place names
    Why goto Why?
  18. Disco
    Disco is also a place name. Disco is another unincorporated community in Blount County, Tennessee, United States.

    Disco, Tennessee

  19. Loafers Glory
    If you are really a loafer, it may be the right place for you. It seems that being idle makes you glorious there. Loafers Glory is an unincorporated community in Mitchell County, North Carolina, United States.
    loafers glory, weird place names unusual place names
    Loafers rejoice, Loafers Glory welcomes you
  20. Handsome Eddy
    They don't mind to shout Eddy is really handsome. Handsome Eddy is a hamlet in Sullivan County, New York, in the United States.

    Handsome Eddy funny place name strange place name

Place Names that Sound Funny in Malayalam

In this post we will see some place name that sounds funny for malayalees. Some are from Kerala while some others are in places speaking different languages. Whatever, if you hear those names you will feel funny (only if you are a malayali (Keralite).

I am adding photos of boards placed on roadsides displaying the place name.

funny place name aliya vada in Gujarat sounds funny in malayalam
Alia vada or Aliya bada is a place in Gujarat state.

Ammayi Appan funny place name in malayalam tamil
Ammaiyappan is a place in Tamil Nadu state. The name sounds just like the Malayalam word for father-in-law.

Arada funny place name arabic malayalam
It is a place in in Makkah of Saudi Arabia. Actually the first letter in the Arabic of the place name is different from the Malayalam letter à´….

Marannodai maranaodai funny place name tamil malayalam

This is also a place from Tamil Nadu.

piles place name funny

I don't know where this place is. But the name is awesome!

funny place name UK english

The place ha ha or road with name ha ha is from UK.

funny place name Vellamadi place funny place name kerala malayalam

Vellamadi is a place in Kerala in Kannur or Kasargod district

funny place name Manthuka place funny place name kerala malayalam

Manthuka is place near Pathanamthitta.

How to Block Ads and Popups on Mozilla Firefox Browser

Tired of annoying ads on your Mozilla Firefox? Get rid of the ads yourself. But remember that, for almost all websites, ads are the only source of income. If everyone removes ads from websites, nothing will be available for free in internet anymore. You can simply block all ads in your Firefox browser yourself. To block ads on firefox browser, click on the menu button remove ads from mozilla firefox, ad blocker, block ads on firefox,block ads and popups on firefox in the top left corner of browser. Then select Add-ons in the menu. Then click Extensions. Then search adblock in the webpages that loads next. Click Install to the right of Adblock Plus in the results. Wait for a while, until the extension is downloaded. When download is complete, adblocker will get installed soon. Thus ad blocker is now installed on your firefox browser. If you still see any ads displayed, right click on it and select AdBlock plus-> Block this ad.  For details watch the following video.





How to Block Advertisements on Opera Browser

Tired of annoying ads on your opera browser? Get rid of the ads yourself. But remember that, for almost all websites, ads are the only source of income. If everyone removes ads from websites, nothing will be available for free in internet anymore. You can simply block all ads in your Opera browser yourself. To block ads on Opera browser, click on the Opera buttonremove ads from opera browser, ad blocker, block ads on opera in the top left corner of browser. Then select Get extensions in menu. Then click Extensions. Then search adblock in the webpages that loads next. Click AdBlock plus in the results. Then click Add to Opera button on the page that loads. Wait for a while until the extension is installed. Thus ad blocker is now installed on your Opera browser. If you still see any ads displayed, right click on it and select AdBlock plus-> Block this ad.  For details watch the following video.




How to Block Ads in Google Chrome Browser

Tired of annoying ads in Google Chrome? Get rid of the ads yourself. But remember that, for almost all websites, ads are the only source of income. If everyone removes ads from websites, nothing will be available for free in internet anymore. You can simply block all ads in your Google Chrome browser yourself. To block ads on Google Chrome browser, click on the button remove ads from google chrome, ad blocker, block ads on chrome in the top right corner of browser. Then select settings. Then click Extensions. Now, click Get more extensions. Then search adblock in the webpages that loads. Click Extensions on the left. Then click Add to chrome button on the right side of AdBlock. Wait for a while until a small file is downloaded. The chrome browser will open the file itself and install ad blocker. Thus ad blocker is installed in your google chrome browser. If you still see any ads displayed, right click on it and select AdBlock -> Block this ad.


Design and Analysis of Algorithms - Lecture Notes and Slides Free Download

Lecture notes as doc files and ppt slides for design and analysis of algorithms for free download.

Module I 

Introduction and Complexity
What is an algorithm – Properties of an Algorithm, Development of an algorithm, Pseudo-code Conventions, Recursive Algorithms – Performance Analysis - Space and Time Complexity –Asymptotic Notations – ‘Oh’, ‘Omega’, ‘Theta’, Worst, Best and Average Case Complexity, Running Time Comparison, Common Complexity Functions -Recurrence Relations – Solving Recurrences using Iteration and Recurrence Trees – Example Problems – Profiling - Amortized Complexity.

 Module II 

Divide and Conquer - Control Abstraction, Finding Maximum and Minimum, Costs associated element comparisons and index comparisons, Binary Search, Divide and Conquer Matrix Multiplication, Stressen’s Matrix Multiplication, Quick Sort, Merge Sort. – Refinements.

Module III 

Greedy Strategy - Control Abstraction, General Knapsack Problem, Minimum Cost Spanning Trees – PRIM’s Algorithm, Kruskal’s Algorithm, Job sequencing with deadlines.
Dynamic Programming - Principle of Optimality, Multistage Graph Problem, Forward Approach, Backward Approach, All-Pairs Shortest Paths, Traveling Salesman Problem.

Module IV

 Backtracking – State Space Tree - Fixed Tuple and Variable Tuple Formulation - Control Abstraction – Generating Function and Bounding Function - Efficiency of the method - Monte Carlo Method – N-Queens Problem, Sum of Subsets.
Branch and Bound Techniques – FIFO, LIFO, and LC Control Abstractions, 15-puzzle.

Module V

Sophisticated Algorithms - Approximation Algorithms – Planar Graph Coloring, Vertex cover - String Matching Algorithms – Rabin Karp algorithm - Topological Sort - Deterministic and Non-Deterministic Algorithms.

Lower Bound Theory - Comparison Trees for Searching and Sorting, lower bound on comparison based algorithms, Sorting, Selection  & Merging; Oracles and Adversary Arguments –Merging,Basic concepts of randomized algorithm-Las Vagas algorithm for search.

Module 5 - Lowerbound slides ppt

Free Light Weight (22KB) Sound Recorder Software

Free sound recorder software to record from microphone, stereo mix etc. Audio recording, Sound recording
Free light weight sound recorder
Looking for a light weight audio recording software? Here is one. It is a really small (about 22 KB) sized application. But it lets you record audio from different audio sources including your built-in microphone, external microphone, stereo mix and system audio. This simple lightweight free sound recorder just lists all the sound mixers available in your computer. You can select any one of them. The application allows you to record audio (including system audio) at various sample rates from 8000 onward and different sample size. You can record either both channels (stereo) or as single channel (mono). This audio recording application allows you to record audio in different audio file formats including wave (.wav), sun audio (.au), AIFF-C (.aifc), AIFF (.aiff or.aif) or SND (.snd).

Download Audio Recorder Program

NB: You may require JRE (Java Runtime Environment) 1.8 or later if you don't have it installed