4 . solve this mate plzz
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answer for the given problem is given
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Given,
(1+cosθ) (1-cosθ) (1+ cot²θ) =1
L. H.S =(1²-cos²θ) (1 +cot²θ )
=(1-cos²θ)(1 +cot²θ )
=(sin²θ)×(cosec²θ)
=(sin²θ) ×(1/sin²θ)
= 1 = R. H. S
Hence, proved.
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