SOLUTION: Angle θ is an acute angle in a right triangle.If m∠θ=31∘ and the side adjacent toθ has length 13, how long is the hypotenuse?
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Question 1111632: Angle θ is an acute angle in a right triangle.If m∠θ=31∘ and the side adjacent toθ has length 13, how long is the hypotenuse?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Both angles are acute in a right triangle, no need to mention that. Plus, it's 31º, which is acute.
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cos(31) = 13/hypotenuse
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