This trigonometry video tutorial explains how to find the exact of trigonometric expressions with angles in radians and degrees using the sum and difference identities & formulas of sine and cosine. This lesson contains plenty of examples and practice problems that will help you to get a thorough understanding of this material.
Full 1 Hour Video on YouTube: • Sum and Difference Identities of Sine...
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Direct Link to The Full Video: https://bit.ly/3yqy8JL