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Do you need help in remembering formulas of Trigonometry? This could help you! Starting with how to convert degrees to radians and vice versa, you have formulas on how to calculate the arc length, aree of a sector of a circle, domain and range of trigonometric functions, evaluating trigonometric functions in the 4 quadrant angles, compound angles and their sum/ difference. The entire course is available at a reasonable price. Contact me for further details.Read less