Find QR. Write your answer as an integer or as a decimal rounded to the nearest tenth.

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37 votes

Find QR.
Write your answer as an integer or as a decimal rounded to the nearest tenth.

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15 votes

Answer:

QR ≈ 9.1

Explanation:

using the cosine ratio in the right triangle

cos49° =
(adjacent)/(hypotenuse) =
(PR)/(QR) =
(6)/(QR) ( multiply both sides by QR )

QR × cos49° = 6 ( divide both sides by cos49° )

QR =
(6)/(cos49) ≈ 9.1 ( to the nearest tenth )

Max Svidlo answered Dec 11, 2023

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