Math, asked by nagarajusiddela88, 7 months ago

cot15 = cot (45-30)

Answers

Answered by prakashsetti2003

1

Step-by-step explanation:

cos 15= 45-30 =cos 45 cos 30 +sin 45 sin 30 =1/√2 √3/2 + 1√2 1/2 cos √3+1/2√2

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