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Exam Review Evaluate the cosine inverse
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Mathematics
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11th Grade - University
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Hard
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The video tutorial explains how to find when the cosine is equal to negative sqrt 3/2 using the unit circle. It identifies the relevant points on the circle and discusses the restrictions of the cosine inverse function, focusing on the first and second quadrants. The tutorial concludes by determining that the only valid angle is 5π/6.
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