Trigonometric Functions and Reference Angles in All Four Quadrants
By LearnZillion MathFrom boclips.com
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In this video, the teacher explains how to find the exact value of the sine of 120 degrees without using a calculator. They introduce the concept of reference angles and how they can be used to determine the trigonometric ratios for angles in all four quadrants.
Tags
Explainer
Synthesis
Mathematics
Geometry
Calculus
Upper Primary
Lower Primary
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