Math, asked by jayantjain17, 10 months ago

sin 2A = Cos( 90 - 5A )

Answers

Answered by Vamsi3002

1

Answer:

We know that sin(90 -A) = cosA and VICE-VERSA

So the question becomes...

$sin2a = sin5a$

SUBSTITUTING ALL THE TRIGNOMETRIC KNOWN VALUES THE ONLY ANGLE THAT SATISFIED IS 0..

HENCE A = 0

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