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meriva
3 years ago
7

Can someone explain and steps on how to do this please

Mathematics
1 answer:
aleksley [76]3 years ago
8 0

Answer:

66.4°

Step-by-step explanation:

\cos \: m\angle B =  \frac{2}{5}  \\  \cos \: m\angle B =  0.4 \\ m\angle H = { \cos}^{ - 1} (0.4) \\ m\angle B = 66.421821522 \\  \huge \red{ \boxed{m\angle H = 66.4 \degree}}

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