Question

Help me guys
Ques
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2
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4

Answer 1

Answer:

Hey mate here is ur answer

Answer 2

Answer:

i m gonna use alpha instead of theta

bcoz there is no provision here to use theta

$sin(90 - 3 \alpha ) = cos( \alpha - 12)$

$cos(-3 \alpha ) = \cos( \alpha - 12)$

$-3 \alpha = \alpha - 12$

$-4\alpha = - 12 \\ \alpha = 3$