Posted by chinnu on .
if theta = 45, the value of cosec ^ 2 theta is ?

maths trigonometry 
Anonymous,
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