IB Maths AI HL AHL 3.8 (HL)—Unit circle and trigonometric equations Question Bank

• Define sin theta and cos theta using the unit circle; tan theta=sin theta/cos theta.

• Use cos^2 theta + sin^2 theta = 1 and ambiguous sine-rule case.

• Construct sin x and cos x graphs from the unit circle; solve trig equations graphically on finite intervals.