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14 July, 06:58

Complete the following statement: If sin (30) = ½, then the cos (___) = ½.

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  1. 14 July, 10:56
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    Sin A=Cos (90º-A)

    Then:

    sin 30º=cos (90º-30º) = Cos 60º=1/2

    Answer: cos 60º=1/2
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