1.

4. cosec theta √1- Cos²theeta = 1​

Answer» LHS = cosec∆ √ 1-cos²∆

= cosec∆ ×√ sin²∆
................{1-cos²∆} = sin²∆

= cosec∆ × sin∆

= cosec∆ × (1/cosec ∆)

= 1 = RHS

mark as BRAINLIEST.....


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