Trig Identities

Front

What is the Pythagorean identity for sine and cosine?

Back

sin²θ + cos²θ = 1

Front

What is the relationship between secant and cosine?

Back

secθ = 1/cosθ

Front

What is the relationship between cosecant and sine?

Back

cscθ = 1/sinθ

Front

What is the relationship between tangent and sine/cosine?

Back

tanθ = sinθ/cosθ

Front

What is the relationship between cotangent and cosine/sine?

Back

cotθ = cosθ/sinθ

Front

Simplify: 1 + tan²θ

Back

sec²θ

Front

Simplify: 1 + cot²θ

Back

csc²θ

Front

What is the formula for tan²θ in terms of sec²θ?

Back

tan²θ = sec²θ - 1

Front

Simplify: tanx * cotx

Back

1

Front

Simplify: sin²x + cos²x

Back

1