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# Trigonometric Functions of Non-Acute Angles

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In this lesson, we will learn how to find reference angles. A reference angle for an angle θ, which is written as θ' is the positive acute angle that is made by the terminal side of our angle θ and the x-axis. Additionally, we will learn the six trigonometric function values of special angles: 30°, 45°, and 60°. We will then move on to learn about special angles as reference angles and how to find trigonometric function values of non-acute angles.

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