Trigonometric Identities

Front

What is the Pythagorean Identity?

Back

sin²θ + cos²θ = 1

Front

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

Back

tanx = sinx/cosx

Front

What is the relationship between secant and cosine?

Back

secx = 1/cosx

Front

What is the relationship between cosecant and sine?

Back

cscx = 1/sinx

Front

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

Back

cotx = cosx/sinx

Front

Simplify: sin²θ + cos²θ

Back

1

Front

Prove: sinx/cosx = tanx

Back

tanx is defined as sinx/cosx.

Front

What is the identity for secant squared?

Back

sec²θ = 1 + tan²θ

Front

What is the identity for cosecant squared?

Back

csc²θ = 1 + cot²θ

Front

Simplify: tan²θ + 1

Back

sec²θ