Trigonometry Formulae

Trigonometric ratios Inverse ratiosComplementary angle rules

Tan and cot definitions

Angles of any magnitude: ASTC stands for All, Sine, Tan, Cos, and defines which is positive for quadrants 1, 2, 3, and 4.

Square relationships

Exact values of 30, 45 and 60

Trigonometric Formulae

Non-Right angled triangle formulaeThe Sine Rule

The Cosine Rule

The Area of a Triangle