Prove that sin – cos 0 sin + cos 0 Your answer sin + sin – cos cos 2 2 sin? ​

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Prove that sin – cos 0 sin + cos 0 Your answer sin + sin – cos cos 2 2 sin? ​

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Madelyn 1 week 2021-09-09T13:00:42+00:00 1 Answer 0 views 0

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    2021-09-09T13:02:01+00:00

     L.H.S. = cosA+cosBsinA−sinB+sinA+sinBcosA−cosB

    ⇒ L.H.S. = (cosA+cosB)(sinA+sinB)(sinA−sinB)(sinA+sinB)+(cosA+cosB)(cosA−cosB)

    ⇒ L.H.S. = (cosA+cosB)(sinA+sinB)sin2A−sin2B+cos2A−cos2B

    ⇒ L.H.S. = (cosA+cosB)(sinA+

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