Trigonometry

Quotient identities are trigonometric identities that are written as fractions of the sine and cosine functions. The tangent forms a ... Read more

We have already become familiar with the trigonometric functions of sine, cosine, and tangent. These functions are written as fractions ... Read more

Pythagorean identities are identities in trigonometry that are extensions of the Pythagorean theorem. Pythagorean identities are useful for simplifying trigonometric ... Read more

The laws of sine and cosine are relations that allow us to find the length of one side of a ... Read more

The law of cosines is an equation that relates the lengths of two sides of a triangle and their intermediate ... Read more

The law of sines is an equation that allows us to relate the sines of an angle to their respective ... Read more

The law of cosines is the ratio of the lengths of the sides of a triangle with respect to the ... Read more

The law of sines indicates that the ratio of the sides of a triangle and the ratio of the sines ... Read more

The cotangent of an angle is the reciprocal of the tangent. Recall that the tangent is defined as the opposite ... Read more

The cosecant of an angle is defined with respect to the sides of a right triangle. In a right triangle, ... Read more