How To Use Reference Angles to Evaluate Trigonometric Functions
This trigonometry video tutorial explains how to use reference angles to evaluate trigonometric functions such as sine, cosine, tangent, secant, cosecant, and cotangent with positive and negative angles in radians and degrees.. You need to have a good understanding of right triangle trigonometry, SOHCAHTOA, 30-60-90 triangle and the 45-45-90 triangle. This tutorial contains plenty of examples and practice problems.
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Two Triangle Problems - More Examples:
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Trigonometry Final Exam Review:
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Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
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Trigonometry Formula Sheet:
https://bit.ly/47diggI
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