How to Find the Angle Given the Cosine Inverse of a Value on the Unit Circle

The video tutorial explains how to solve trigonometric equations by using inverse functions, specifically focusing on the cosine function. It guides students through the process of finding angles using the unit circle and special right triangles, emphasizing the importance of reference angles and restrictions. The tutorial also covers how to identify valid angles when given specific cosine values, using both radians and degrees.

What is the equation given in the lesson regarding cosine?

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How do you solve for the variable Theta when given the cosine value?

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What is the reference angle for cosine when the value is sqrt(3)/2?

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What are the two angles where the cosine function has a negative X coordinate?

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How do you determine the angle that produces the cosine value of -sqrt(3)/2?

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