If cot²θ= evaluate : (i) (1+sinθ)(1−sinθ)/(1+cosθ (1−cosθ)
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Step-by-step explanation:
Goven
1+sin∅ × 1- sin ∅/ 1+cos∅ × 1+cos∅ here ∅ represent theta
1- sin^2∅/1-cos^2∅ since
cos^2∅/ sin^∅ since 1- sin^2∅= cos^2 ∅
so cot² ∅ = tan² ∅
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