Question

Answer the question​

Answer 1

Answer:

option 3) 1.

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Answer 2

Answer:

I think the answer would be 1.

Because

Step-by-step explanation:

cos9α=sinα

⇒cos9α=cos(90°−α)

⇒9α=90°−α

⇒10α=90°

⇒α=9°

∴tan5α=tan45°=1

Hence, the answer is 1.