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23 January, 23:25

Find tan and cos if sec=4 and sin<0

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  1. 24 January, 02:15
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    Sin (x) = - √15 / 4 and tan (x) = sin (x) / cos (x) = ( - √15 / 4) / (1/4) = ( - √15 / 4) / (4/1) = - √15

    tan (x) = - √15
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