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20 January, 22:21

If sin y° = 9 divided by c and tan y° = 9 divided by d, what is the value of cos y°?

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  1. 20 January, 22:29
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    Siny=9/c

    tany=9/d

    we know that tany = siny/cosy==> 9/d = (9/c) / cosy

    cosy=9d/c divided by 9, that means multiply by 1/9

    so cosy d/c
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