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Solve cos theta = -0.9057 for, 0degrees <= to theta < 360. How do I solve this and why is the answer not 155 degrees? Thanks in advance.

 Dec 18, 2019
 #1
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cos (-0.9057)  ≈  154.9°     [ pretty close  !!!   ]

 

Note....cos (155°)  ≈  -0.9063

 

cool cool cool

 Dec 18, 2019

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