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==Description==
==Description==
Consider '''x = 90''' then '''=COS(RADIANS(90))''' gives '''0.5000000000000001''' that is approximate to '''0.5'''<br/>
Consider '''x = 60''' then '''=COS(RADIANS(60))''' gives '''0.5000000000000001''' that is approximate to '''0.5'''<br/>
The above function gives the Cosine of 'x' in Degree.<br/>
The above function gives the Cosine of 'x' in Degree.<br/>
*In a right angled triangle, '''COS = Adjacent side / Hypotenuse'''.<br/>
*In a right angled triangle, '''COS = Adjacent side / Hypotenuse'''.<br/>