Answer :

Given that, sin θ + cosec θ = 2


Squaring both sides, we get


(sin θ + cosec θ)2 = 22


sin2θ + cosec2θ + 2 sin θ cosec θ = 4



sin2θ + cosec2θ + 2 = 4


sin2θ + cosec2θ = 2

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