QUI 2.1 2.2 2.3 2.4 2.4.1 It is given that sin23° = √m. Write cos23° in terms of m, without using a calculator. Leave your anwer in the simplest form. Simplify completely without using a calculator: sin(90° - x). cos(180° +x)+tanx.cosx.sin(x - 180°) Determine the value of the following expression: 2sinx.cosx(1+tan2x) tanx Consider the following: 1-cos² A 4cos (90°+A) Simplify the expression to a single trigonometric term. 2.4.2 Hence, Determine the general solution of: 1-cos²2x 4cos (90°+2x) = 0,21

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