Question

Evaluate:
(sec 29) / (cosec 61) + 2cot 10 . cot 17 . cot 45. cot 73 . cot 80 - 3

Answer 1

ans will be zero as first term in sec and cosec results in 1 and then 2nd term results in 2 as all cot term cancelled and middle term values 1 of cot series so final ans is 1+2-3 =0

Answer 2

See the attach file for ur ans