What is the measure of ∠R?

asked Mar 1, 2021 174k views

2 votes

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4 votes

Answer:

∠ R ≈ 36.9°

Explanation:

Using the cosine ratio in the right triangle

cos R =
(adjacent)/(hypotenuse) =
(RT)/(RS) =
(8)/(10) , thus

∠ R =
cos^(-1) (
(8)/(10) ) ≈ 36.9° ( to 1 dec. place )

JeroenVdb answered Mar 8, 2021

8.1k points

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