Question: Establish the identity. sin (a - B) cot B - cot a sin (a + B) cot B + cot a OA. cos a cos

Establish the identity. sin (a - B) cot B - cot a sin (a + B) cot B + cot a OA. cos a cos B+ sin a sin B sin (a - ) cos a cos B+ sin asin B sin a sin B sin (a + B) cos a cos f - sin a sin B cos a cos B - sin a sin B sin a sin B cos a cos B sin a sin B sin a sin B sin a sin B cot B - cot a cos a cos B sin a sin B cot f + cot a sin a sin p sin a sin B OB. sin a cos B + cos a sin B sin (a - B) sin a cos B + cos asin B sin a sin B sin (a + () sin a cos B - cos asin f sin a cos B - cos a sin B sin a sin B sin a cos B cos a sin B sin a sin B sin a sin B cot B - cot a sin a cos B cos asin B cot B + cot a sin a sin B sin a sin B O c. sin a cos B - cos asin B sin a cos B - cos asin B sin a sin B sin (a - B) sin (a + B) sin a cos B+ cos asin B sin a cos f+ cos a sin B sin a sin p sin a cos B cos asin p in Noin A

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