Trig Identities (Simplify)

Front

What is the definition of secant (sec)?

Back

secθ = 1/cosθ

Front

Back

sec(x)

Front

What is the Pythagorean identity involving sine and cosine?

Back

sin²θ + cos²θ = 1

Front

Back

sin x

Front

What is the definition of cosecant (csc)?

Back

cscθ = 1/sinθ

Front

What is the relationship between cotangent and tangent?

Back

cotθ = 1/tanθ

Front

Back

cot x

Front

What is the definition of tangent (tan)?

Back

tanθ = sinθ/cosθ

Front

What is the co-function identity for sine and cosine?

Back

sin(90° - θ) = cosθ

Front

What is the double angle formula for sine?

Back

sin(2θ) = 2sinθcosθ