Values of the trigonometric functions: sin0° = 0, sin30° = 1/2, sin45° = √2/2, sin60° = √3/2, sin90° = √3/2, cos0° = 1, cos30° = √3/2, cos45° = √2/2, cos60° = 1/2, cos90° = 0, tan0° = 0, tan30° = √3/3, tan45° = 1, tan60° = √3, tan90° = -, cot0° = -, cot30° = √3, cot45° = 1, cot60° = √3/3, cot90° = 0.