Question

cos A cos(90°- A) -sin A sin (90°- A) =0​

Answer 1

Answer:

Here is the proof!!!!!

Step-by-step explanation:

. We know that

$\sin(90 - x) = \cos(x) \\ \cos(90 - x) = \sin(x)$

Then by substituting the known in the given question we get,

$\cos(a) \sin(a) - \sin(a) \cos(a ) = 0$

HOPE IT HELPS❤

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