Changes

Consider &nbsp;&nbsp;&nbsp; '''x = 90'''&nbsp;&nbsp;&nbsp;  then &nbsp;&nbsp;&nbsp;  '''=COS(RADIANS(90))'''&nbsp;&nbsp;&nbsp; gives &nbsp;&nbsp;&nbsp;'''1''' <br/>

Consider &nbsp;&nbsp;&nbsp; '''x = 90'''&nbsp;&nbsp;&nbsp;  then &nbsp;&nbsp;&nbsp;  '''=COS(RADIANS(90))'''&nbsp;&nbsp;&nbsp; gives &nbsp;&nbsp;&nbsp;'''1''' <br/>

This fuction gives the cosine of 'x'.

This function gives the cosine of 'x'.<br/>

In a right angled triangle,COS=adjacent/hypotenuse.

In a right angled triangle,COS=adjacent/hypotenuse.<br/>

It will give the value in radians.To convert that in degrees  multiply with PI()/180 or we have to use the radians function.

It will give the value in radians.To convert that in degrees  multiply with PI()/180 or we have to use the radians function.

* COS function determines the sine of the given angle. <br/>

* COS function determines the sine of the given angle. <br/>