If sin (7y) = cos (5y + 14), find y.

Question

If sin (7y) = cos (5y + 14), find y.

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Reagan 3 weeks 2021-11-10T15:57:25+00:00 1 Answer 0 views 0

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    2021-11-10T15:58:48+00:00

    Answer:

    Step-by-step explanation:

    sin(7y)=cos(5y+14)=sin(90-(5y+14))=sin(76-5y)

    7y=76-5y

    12y=76

    y=76/12=19/3

    or

    sin(7y)=cos (5y+14)=sin (90+(5y+14))=sin (5y+104)

    7y=5y+104

    2y=104

    y=52

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