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योगफल (1)/(sin 45^(@) sin 46^(@)) + (1)/...

योगफल `(1)/(sin 45^(@) sin 46^(@)) + (1)/(sin 47^(@) sin 48^(@)) + (1)/(sin 49^(@) sin 50^(@))+....+ (1)/(sin 133^(@) sin 134^(@))` का मान होगा-

A

(i) `sec (1)^(@)`

B

(ii) `"cosec" (1)^(@)`

C

(iii) `cot (1)^(@)`

D

(iv) none

लिखित उत्तर

Verified by Experts

The correct Answer is:
B
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