Trig Identities

Front

What is the definition of cotangent?

Back

Cotangent is defined as the ratio of the adjacent side to the opposite side in a right triangle, or cotangent = cosine/sine.

Front

What is the reciprocal of secant?

Back

Secant is the reciprocal of cosine.

Front

What is the general solution for the angle A in terms of n for the function Arccos?

Back

The general solution is ±A + 360n.

Front

What is the Pythagorean identity involving sine and cosine?

Back

1 - cosine^2(A) = sine^2(A).

Front

What is the general solution for the angle A in terms of n for the function Arctan?

Back

The general solution is A + 180n.

Front

What is the definition of sine in a right triangle?

Back

Sine is defined as the ratio of the opposite side to the hypotenuse.

Front

What is the definition of cosine in a right triangle?

Back

Cosine is defined as the ratio of the adjacent side to the hypotenuse.

Front

What is the definition of tangent in terms of sine and cosine?

Back

Tangent is defined as tangent = sine/cosine.

Front

What is the relationship between sine and cosecant?

Back

Cosecant is the reciprocal of sine.

Front

What is the relationship between cosine and secant?

Back

Secant is the reciprocal of cosine.