Math, asked by nirmalshrestha2022, 10 months ago

if cos9A = sinA and 9A is less than 90degree. then find the value of tan5A.

Answers

Answered by sarojdevisangwan

12

Answer:

Cos 9A = sin A

Sin (90-9A) = sinA

90-9A = A

10A = 90

A = 9

So, tan5A = tan 45 = 1

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