Trigonometry Identities II Double Angles

1 - 2TamX 1 -Tan X Note: SinX TamX cosx ("Quotient Trig Identity") since Tan Sin(2X) cos(2X) Sin Cos = Tan(2X) sme mathplanfflcom Sin2x Cos2x Sin2X - cos2X - Tan2X - Therefore, it follows that Tan2x Using Double Angle Formulas: Practice 1) Sinx Quad 11 in Quadrant Il Find Sin2X, cos2X, and Tan2X SinX - 3/5 — -4/5 cosx - -3/4 = Sin2x = 9/25 ................
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