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# Inverse Function, Cosine, Unknown Angle, Three Known Sides

TRIG-HIDY4Y

Given $\text{ triangle ABC}$ below, find the measure of $\text{ angle ACB}$ to the nearest hundredth of a degree.

A

$\theta ={ 71.28 }^{ o }$

B

$\theta ={ 18.72 }^{ o }$

C

$\theta ={ 43.44 }^{ o }$

D

$\theta ={ 46.56 }^{ o }$