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9 October, 12:10

How do I solve : COT pi/4 ... ?

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  1. 9 October, 13:58
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    Cot x = cos x / sin x

    cot π/4 = cot 45° = cos 45° / sin 45°

    We know that sin 45° and sin 45° have the same value:

    cos 45° = sin 45° = √2 / 2;

    cos 45° / sin 45° = √2/2 : √2/2 = 1

    Answer:

    cot π/4 = 1
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