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Kanishk Raj Vats

· started a discussion

· 1 Months ago

resend (Question: 271972.0 )

what about cot 20 and cot 21?

Question:

If (1 – cot 4º) (1 – cot 5º) (1 – cot 6º) …. (1 – cot 41º) = 2P, then the value of P is –

Options:
A)

17

B)

18

C)

19

D)

21

Solution:

Ans: (c)


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