dr7nShealAmadina dr7nShealAmadina

11-11-2016
Mathematics

contestada

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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nobillionaireNobley nobillionaireNobley

16-11-2016

cos A = 0.1117
m<A = arccos(0.1117) = 84°
m<C = 90° - 84° = 6°°

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scme1702 scme1702

16-11-2016

∠B = 90°
∠A = cos⁻¹(0.1117) = 83.6°
∠C = 180 - 90 - 83.6
∠C = 6.4°

Answer Link

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