Question

Is cos 2 theta = sin 2 (90-theta) ?

Answer 1

Answer:

Step-by-step explanation:

Sin^2(90°-A)+cos^2(90°-A)

Answer 2

Answer:

This statement is True.

Step-by-step explanation:

$LHS = cos^{2}\theta \\=(cos\theta)^{2}\\=[sin(90-\theta)]^{2}\\=sin^{2}(90-\theta)\\=RHS$

Therefore,

$cos^{2}\theta = sin^{2}(90-\theta)$

This statement is True.

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