(Q13)Evaluate the following:
iii. (sec
2
θ – 1) (cosec
2
θ – 1)
Given (sec
2
θ – 1) (cosec
2
θ – 1)
=
2
θ ×
2
θ [∵ sec
2
θ – tan
2
θ = 1; cosec
2
θ – cot
2
θ = 1]
=
2
θ ×
1
2
θ
=
Clear