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rohit meena

· started a discussion

· 1 Months ago

rrr (Question: 271972.0 )

thoda detail m bta do plz

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)


Uttam Kant Sharma

· commented

· 1 Months ago

cot (a+b)= cot a. cot b -1/ cpt a+ cot b..refer this formula..it will be solved
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