Question

यदि sinθ + cosecθ = 2 तो sin2θ + cosec2θ =
(A) 1
(B) 4
(C) 2
(D) ½

Answer 1

Hey mate... ♡

sin A + cosec A = 2 

Squaring this on both sides, we get 

sin^2A + cosec^2A + 2 sinA cosecA = 4 

sin^2A + cosec^2A = 4 - 2 sinAcosecA 

But we know that 
cosec A = 1/sinA 

so we get sinA cosecA = sinA * 1/sinA = 1 

so we get 

sin^2A + cosec^2A = 4 -2 = 2 

sin^2A + cosec^2A = 2 ---------------->ANSWER

Hence, option [C] is correct..

HOPE IT HELPS.. ♡

Answer 2

Here is Your Answer

Quetion :- यदि sinθ + cosecθ = 2 तो sin2θ + cosec2θ =

Answer :- 2.

Hope it Heplfull Answer