MathDB

59

Part of 1983 IMO Longlists

Problems(1)

Solve the equation tan^2(2x) + 2 tan(2x) · tan(3x) −1 = 0

Source:

10/7/2010
Solve the equation tan⁡2(2x)+2tan⁡(2x)⋅tan⁡(3x)−1=0.\tan^2(2x) + 2 \tan(2x) \cdot \tan(3x) -1 = 0.
trigonometryalgebra proposedalgebra