**
**

**T r i g o n o m e t r y**

Radian and degree measures of angles

Transforming of degree measure to radian one and back

Trigonometric functions of an acute angle

Solving of right-angled triangles

Relations between trigonometric functions of the same angle

Trigonometric functions of any angle

Addition and subtraction formulas

Double-, triple- and half-angle formulas

Transforming of trigonometric expressions to product

Basic relations between elements of triangle

Inverse trigonometric functions

Basic relations for inverse trigonometric functions

Problems: Trigonometric transformations

Trigonometric equations. Main methods for solving

Systems of simultaneous trigonometric equations

Problems: Trigonometric equations

Problems: Trigonometric inequalities