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18 December, 06:02

In a right triangle, the length of the hypotenuse is 12m and the measure of one of the acute angles is 36°. Find the measure of the other acute angle and the lengths of the legs.

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  1. 18 December, 06:48
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    The answer to your question is:

    acute angle = 54°

    legs 7 m y 9.7 m

    Step-by-step explanation:

    Data

    Hypotenuse = 12 m

    acute angle = 36° = a

    acute angle 2 = ? = b

    lengths of legs=?

    Process

    The sum of the internal angles on a triangle equals 180°

    a + b + 90 = 180

    36 + b + 90 = 180

    b = 180 - 126

    b = 54°

    sin Ф = opposite leg / hypotenuse

    opposite leg = hypotenuse x sin Ф

    opposite leg = 12 x sin 36

    opposite leg = 7 m

    Pythagorean theorem

    c² = a² + b²

    a² = c² - b²

    a² = 12² - 7²

    a² = 144 - 49

    a ² = 95

    a = 9.7 m
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