What is the angle θ in the triangle below? (Hint: Use an inverse trigonometric function.)

A. 45.3°
B. 22.0°
C. 68.0°
D. 0.38°

What is the angle θ in the triangle below Hint Use an inverse trigonometric function A 453 B 220 C 680 D 038 class=

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Answer

The correct answer is B

Explanation

The side length opposite to the angle [tex]\theta[/tex] has length [tex]3[/tex] units.

The length of the hypotenuse is [tex]8[/tex] units.


We use the trigonometric ratio that involves the length of the opposite side and the hypotenuse, which is

[tex]\sin\theta=\frac{Opposite}{Hypotenuse}[/tex]


[tex]\sin\theta=\frac{3}{8}[/tex]

This is the same as,

[tex]\sin\theta=0.375[/tex]


We take the sine inverse to obtain,

[tex]\theta=\sin^{-1}(0.375)[/tex]

This evaluates to

[tex]\theta=22.024[/tex]


Therefore the value of the angle [tex]\theta[/tex] is [tex]22.0\degree[/tex] to the nearest tenth





22.0 is right i got it right on the test for A P E X

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