# maths trigonometry

if theta = 45, the value of cosec ^ 2 theta is ?

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1. cosec(theta)=1/sin(theta)

sin(45°)= sqrt(2)/2= 1/sqrt(2)

cosec(45°)=1/[1/sqrt(2)]

cosec(45°)=sqrt(2)

cosec^2(45°)=[sqrt(2)]^2= 2

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