Cos(40°- A) – Sin (50°+A) = A Sin 40° B Sin 10° C 2 D 0

Question

Cos(40°- A) – Sin (50°+A) =
A Sin 40° B Sin 10° C 2 D 0

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Genesis 1 month 2021-08-20T20:13:05+00:00 1 Answer 0 views 0

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    2021-08-20T20:14:49+00:00

    Answer:

    cos (40 deg – x) – sin (50 deg + x) = cos (40 deg – x) – cos (40 deg – x) [from (1)]

    Therefore, cos (40 deg – x) – sin (50 deg + x) = 0

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