Trigonometry 1

Subject 1: The trigonometric functions in a right triangle.

• Level 1 : Express SIN a, COS a, TAN a by means of the sides
• Level 2 : Using the inverse functions
• Level 3 : Checking identities

Subject 2: The law of sines and the law of cosines.

• Level 1 : Solve a right triangle
• Level 2 : Solve a right triangle with parameters
• Level 3 : Solve a triangle by using the law of cosines or the law of sines
• Level 4 : Calculate part of a triangle or a shape.