USe the trigonometric identites that we went over in class to write the following trigonometric expression in its most reduced form cos2(5x)

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USe the trigonometric identites that we went over in class to write the following trigonometric expression in its most reduced form  cos2(5x)

grbavit · Accepted Answer

Given expression,    cos2(5x)    Making use of the trignometric identity    cos⁡(2x)=2cos2x−1    ⇒cos2x=1+cos⁡(2x)2    Now    cos2(5x)=1+cos⁡2(5x)2    =1+cos⁡2(5x)2    =1+cos⁡(10x)2    =12+cos⁡(10x)2    Final answer:    cos2(5x)=12+cos⁡(10x)2

Jeffrey Jordon · Accepted Answer

Answer is given below (on video)

USe the trigonometric identites that we went over in class to write the following trigonometric...

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