sin(90-x)=cos(x) use sum or difference formula to solve​

Question

sin(90-x)=cos(x) use sum or difference formula to solve​

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Parker 3 months 2021-11-06T13:51:03+00:00 1 Answer 0 views 0

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    2021-11-06T13:52:26+00:00

    Answer:

    sin(90-x)=cos(x)

    So,

    sin(a-b)=sin(a)cos(b)-cos(a)sin(b)

    sin(90\º-x)=sin(90\º)cos(x)-cos(90\º)sin(x)

    Once, sin90\º=1 and cos(90\º)=0

    sin(90\º-x)=1cos(x)-0sin(x)

    sin(90\º-x)=cos(x)

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