Question

(Sin - cos)(Sino + cos) / (Sin + cos) (Sin -cos) =2/ (2sin²-1)​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

sin-cos/sin+cos + sin+cos/sin-cos

LCM

(sin-cos)² /sin²-cos² + (sin+cos)²/sin²-cos²

sin²+cos²-2sincos +sin² +cos² + 2sincos/sin²-cos²

2(sin²+cos²)/sin²-cos²

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Point - (Sin²+cos²) =1 , cos²= 1-sin²

Substituting Equations

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2(1)/sin²-(1-sin²)

2/2sin²-1