Showing posts with label trick. Show all posts
Showing posts with label trick. Show all posts

How to Create Shutdown Shortcut in Windows

You can make a shortcut file which when opened, instantly shuts down Windows Operating System. This works in Windows 7, Windows 8 and Windows 10. Here we will see how to create a shutdown shortcut in Windows. To make a shutdown shortcut on desktop, follow the given instructions.

  1. Right click on desktop.
  2. Select New -> Shortcut
  3. Type shutdown /p  in the text box
  4. Click Next button
  5. Give a name for the shortcut, like 'Shutdown' or 'Turn off'.
  6. Now Click Finish.
  7. No you will get a shortcut file on desktop
If you open this shortcut file, your computer will shutdown instantly. You will lose your unsaved works. So close all applications properly before shutdown.

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