We extensively use of the graphs of the functions sine, cosine and tangent in order to solve these equations. In trigonometric equations, a number of angles and their trigonometric ratios are used frequently. A list of these angles and their sines, cosines, and tangents are given below.
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![Trigonometric Equations](https://i0.wp.com/examplanning.com/wp-content/uploads/2019/06/trigonometric-equation.jpg?resize=1060%2C1211&ssl=1)