In right triangle PQR, m∠Q = 90° and sin R=5/13 What is the value of cos R? a) 5/13 b)5/12 c) 12/13 d) 12/5

Question

In right triangle PQR, m∠Q = 90° and sin R=5/13
What is the value of cos R?
a) 5/13 b)5/12 c) 12/13 d) 12/5

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Kim Chi 3 months 2021-07-30T17:09:51+00:00 1 Answers 10 views 0

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    2021-07-30T17:11:16+00:00

    Answer:

    C

    Step-by-step explanation:

    Given

    sinR = \frac{5}{13} = \frac{opposite}{hypotenuse}

    This is a 5- 12- 13 triangle with legs PQ = 5, QR = 12, hypotenuse PR = 13

    cosR = \frac{adjacent}{hypotenuse} = \frac{QR}{PR} = \frac{12}{13}

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