Question

sin a/1+cot a - cos a/1+tan a=sin a - cos a​

Answer 1

Answer:

Sina/1+cota-cosa/1+tana

Sin²a/sina +cosa - cos²a/sina +cosa

sin²a-cos²a/sina +cosa

(Sina +cosa)(sinA-cosA)/sina +cosa

Sina -cosa

hence proved

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