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27 May, 12:56

A right triangle ABC is shown. Leg AC has length 18, leg BC has length 24, and hypotenuse AB has length 30. Find the exact values of sin A and cos A. Write fractions in lowest terms.

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  1. 27 May, 14:23
    0
    Although there i no triangle given as the question requires, I am still going to answer because I understand it.

    ABC is a right angled triangle. The triangle is 90° at C.

    The trigonometric ratio sine is given by, sine = opposite/hypotenuse.

    Cosine = adjacent/hypotenuse

    So therefore, Sin A = 24/30

    = 4/5

    Cos A = 18/30

    = 3/5
  2. 27 May, 15:39
    0
    To solve this problem you must apply the proccedure shown below:

    1. You have the following information given in the problem above: The l eg AC has length 18, the leg BC has length 24, and the hypotenuse AB has length 30.

    2. Therefore, you have:

    - You have that SinA is:

    SinA=Opposite/Hypotenuse

    SinA=24/30

    SinA=4/5

    - You have that CosA is:

    CosA=Adjacent/Hypotenuse

    CosA=18/30

    CosA=3/5
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