Pythagorean Identities

cos² α + sin² α = 1

sec² α = 1 + tan² α

csc² α = 1 + cot² α


Examples

Knowing that sin α = 3/5, and 90º < α <180°. Calculate the remaining trigonometric ratios of angle α.

Trigonometric Ratio

Trigonometric Ratios

Trigonometric Ratios


Knowing that tan α = 2, and 180° < α <270°. Calculate the remaining trigonometric ratios of angle α.

Pythagorean Identities

Pythagorean Identities

Pythagorean Identities