Question

2 sin A *17. If -=k, then 1+ sinA+COSA 1+ sinA-COS A 1+ sinA (1) (3) 2K engine 10 (4)

JEE/Engineering Exams

Maths

Solution

139

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( operatorname{siven}: k=frac{2 sin A}{1+sin A+cos A} quad frac{text { Page No. }}{ } ) Let ( quad frac{x}{1}=frac{1-cos A+sin A}{1+sin A} )