1 Answer

Gauravphoenix · Answer 1 · 2023-04-22T08:49:05+0000

STEP - BY - STEP EXPLANATION

What to find?

The equivalent expression.

Given:

Step 1

Simplify cos2x

$\begin{gathered} cos2x=cos(x+x)=cosxcosx-sinxsinx \\ \\ =cos^2x-sin^2x \end{gathered}$

Step 2

Replace the above in the given expression.

ANSWER

Please log in or register to add a comment.