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If cosx is approximately 0.9511, what is the measurement of x to the nearest degree? Approximately, what is the sin of the angle that is complementary to x?
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Aug 22, 2017
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If cosx is approximately 0.9511, what is the measurement of x to the nearest degree? Approximately, what is the sin of the angle that is complementary to x?
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Jeff Steil
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cosx ≈ 0.9511, so arccos (0.9511) ≈ x, so x≈18°
the complementary angle of x is y=90°-18°=72°
its sinus is sin72°=
0.951
Ivo Velitchkov
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Aug 27, 2017
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Ivo Velitchkov
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