Simplifying/Verifying Trig Identities

Front

What is the Pythagorean identity for sine and cosine?

Back

sin²θ + cos²θ = 1

Front

What is the definition of secant (sec)?

Back

secθ = 1/cosθ

Front

What is the definition of cosecant (csc)?

Back

cscθ = 1/sinθ

Front

Simplify: sin²θ + cos²θ

Back

1

Front

What is the relationship between tangent and sine/cosine?

Back

tanθ = sinθ/cosθ

Front

Simplify: (sinx - cosx) / (sinxcosx)

Back

secx - cscx

Front

What is the definition of cotangent (cot)?

Back

cotθ = cosθ/sinθ

Front

Simplify: 1 - sin²θ

Back

cos²θ

Front

What is the double angle formula for sine?

Back

sin(2θ) = 2sinθcosθ

Front

What is the double angle formula for cosine?

Back

cos(2θ) = cos²θ - sin²θ