Trigonometry

三角函數公式

trigonometric formulas for all:)

This App has all the important formulas and concepts

-Basic definitions

-Trigonometric functions

-Inverse trig functions

-Unit circle

-Law of sine and cosine

-Negative angle formulas

-Periodic formulas

-Double & triple angle formulas

-Power-reduction formulas

-Degree to radians formulas

-Sum and difference formulas

-Product to sum formulas

-Sum to product formulas

-Reduction formulas

-Compositions of trig functions

-Trigonometric equations

-Euler's formula