Question

prove that (1+cot²θ)(1-cosθ)(1+cosθ)=1

Answer 1

$(1 + {\cot}^{2} \theta)(1 - \cos\theta )(1 + \cos\theta) = 1 \\ {\csc }^{2} (\theta) (1 - { \cos }^{2} \theta) = 1 \\ \frac{ { \sin }^{2} \theta}{ {\sin}^{2} \theta } = 1 \\ 1 = 1$
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Answer 2

Answer:

Step-by-step explanation: