Back to Main Page Precalculus Review Linear, Quadratic, and Polynomial functions Rectangular coordinate systems Linear functions Quadratic functions Polynomial function Quiz Rational functions Basic concepts of functions Domain and range Graphs of functions Implied domain Cube root function Absolute value function Vertical line test Composite functions Inverse functions Horizontal line test Quiz Exponential and logarithmic functions Rational and irrational exponents Exponential function Logarithmic function Laws of logarithms Quiz Trigonometric functions Radian and right triangles Sine, cosine and tangent functions cosecant, secant and cotangent functions Trigonometric functions on a coordinate system Sine and cosine function Periodic function Tangent function Trigonometric additions and subtractions Double-angle and half-angle formulas More trigonometric formulas Inverse sine function Inverse cosine function Inverse tangent function General solutions to trigonometric equations Quiz Trigonometric applications Simple harmonic functions Trigonometric graphs Law of sines and cosines Euler's formula Manage GO GO Further