Simplify (1 − cos θ) (1 +cosθ) (1 + cot²θ)
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(1-cos thita) (1+cos thita)(1+cot^2 thita)
= (1-cos^2 thita)(1+cot^2 thita)
= sin^2 thita cosec^2 thita
= 1
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.
.
☺️☺️☺️☺️
HERE YOUR ANSWER
⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️
(1-cos thita) (1+cos thita)(1+cot^2 thita)
= (1-cos^2 thita)(1+cot^2 thita)
= sin^2 thita cosec^2 thita
= 1
✔️✔️ HOPE IT HELPS YOU✔️✔️
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