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AP Precalculus

Unit 3: Trigonometric and Polar Functions

30–35% of exam score
Where you are No tests yet
A timed sectional mock on this unit

Periodic phenomena, sine, cosine and tangent on the unit circle, sinusoidal models, inverse trigonometric functions, identities and polar graphs.

Key formula
f(θ)=asin⁡(b(θ+c))+d,period 2π∣b∣f(\theta) = a\sin(b(\theta + c)) + d, \quad \text{period } \tfrac{2\pi}{|b|}

What this unit covers

  • The unit circle and periodic functions

  • Sinusoidal transformations and models

  • Inverse trig functions and identities

  • Polar coordinates and polar graphs

Other units in AP Precalculus