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e-lub [12.9K]
3 years ago
13

What is the missing angle in the right triangle?

Mathematics
1 answer:
Ainat [17]3 years ago
8 0

Answer:

68

Step-by-step explanation:

For angle A, 3 is the adjacent leg. 8 is the hypotenuse.

The trig ratio that relates the adjacent leg to the hypotenuse is the cosine.

\cos A = \dfrac{adj}{hyp}

\cos A = \dfrac{3}{8}

\cos A = 0.375

We know the cosine of angle A equals 0.375. We take the inverse cosine of 0.375 to find the measure of the angle.

A = \cos^{-1} 0.375

A = 68^\circ

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