Half-angle formulae (HSC SSCE Mathematics Extension 1): Quizzes

Trigonometric equations

2 sin A/2 cos A/2

tan A/2

1 - t^2 / 1 + t^2

1/2

Simplify integrals

θ = 60

t = 2t / 1 - t^2

cos^2 A/2 - sin^2 A/2

1/√3