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4. cosec theta √1- Cos²theeta = 1 |
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Answer» LHS = cosec∆ √ 1-cos²∆ = cosec∆ ×√ sin²∆ ................{1-cos²∆} = sin²∆ = cosec∆ × sin∆ = cosec∆ × (1/cosec ∆) = 1 = RHS mark as BRAINLIEST..... |
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