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1. The document discusses solving trigonometric functions using half-angle and double-angle identities. It works through examples of finding values of trig functions where the angle is half or double of a given angle. 2. Various trig identities are used, such as cos(2x) = cos^2(x) - sin^2(x) and sin(2x) = 2sin(x)cos(x) to simplify expressions and find equivalent trig functions with angles in the first quadrant. 3. The examples cover evaluating trig functions for angles in all four quadrants by using tran

Author

Marianne Joyce Cristal

Language

EN