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14 July, 17:43

What is the exact value of cos 45° as found on the unit circle?

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  1. 14 July, 20:59
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    The exact value of cos 45 as per the special triangle would be

    Cos 45 = 1/✔️2

    Rationalizing the denominator gives

    ✔️2/2 = 0.707.
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