1.

sin A+cos A4 S sin4-cosd _ 2L =S डयve tha sin A+cosAd sin’ A-cos 4DMLsin A —cos 4

Answer»

(sinA+cosA)^2+(sinA-cosA)​^2/ sin^2A-cos^2A

sin^2A+cos^2A+sin^2A+cos^2A​ / sin^2A-cos​^2A

2/sin^2A-cos^​2A



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