Q5 of 118 Page 5

If sin x = cosec x = 2, then write the value of sinn x + cosecn x.

(Question might be different)

sin x+ cosec x = 2


⇒


⇒ sin2x +1 = 2sin x


⇒ sin2x - 2sin x+1 = 0


⇒ (sin x-1)2=0


⇒ sin x = 1


As sin x = 1


sinnx = 1


∴ sinn x + cosecnx


⇒


⇒ 2.


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