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In right triangle ABC, m_B = 90Á and cos A = 1117. What are m_A and m_C to the nearest degree?
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In right triangle ABC, m_B = 90Á and cos A = 1117. What are m_A and m_C to the nearest degree?

User Jerico Pulvera
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2 Answers

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∠B = 90°
∠A = cos⁻¹(0.1117) = 83.6°
∠C = 180 - 90 - 83.6
∠C = 6.4°
User Yeldar Nurpeissov
by
8.3k points
3 votes
cos A = 0.1117
m<A = arccos(0.1117) = 84°
m<C = 90° - 84° = 6°°
User Fenkerbb
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9.0k points
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