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# sin(a+b) = (cos a)(sin b) + (sin a)(cos b) యొక్క నిరూపణ

Translated from original video
Title - Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b)
URL -https://www.khanacademy.org/math/trigonometry/less-basic-trigonometry/trig_iden_tutorial/v/proof--sin-a-b------cos-a--sin-b-----sin-a--cos-b