How do you evaluate $arccos 0.0127$ $arccos 0.0127$ ?

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How do you evaluate $arccos 0.0127$ $arccos 0.0127$ ?

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Answer 1 · 2016-12-21T14:40:17

$89^{\circ} 27; 270^{\circ} 73$ $89^@27; 270^@73$

Explanation:

Use Calculator and unit circle:
cos x = 0.0127 --> arc $x = \pm 89^{\circ} 27$ $x = +- 89^@27$
Answers for (0, 360):
$89^{\circ} 27 and 270^{\circ} 73$ $89^@27 and 270^@73$ (co-terminal to -89.27)

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How do you evaluate $arccos 0.0127$ $arccos 0.0127$ ?

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