Prove that:
To Prove:
Formula Used:
1)
2) cosec2 A = 1 + cot2 A
3)
4)
Proof:
LHS
Let x = cot A
= cot-1(cosec A – cot A)
From (2), A = cot-1 x,
= RHS
Therefore, LHS = RHS
Hence proved.