Trig Identities

Front

What happens when you multiply two reciprocal functions?

Back

It equals 1.

Front

secθ = ?

Back

1/cosθ

Front

tanθ = ?

Back

sinθ/cosθ

Front

cotθ = ?

Back

1/tanθ

Front

cscθ = ?

Back

1/sinθ

Front

What is the Pythagorean identity?

Back

sin²θ + cos²θ = 1.

Front

What is the quotient identity for tangent?

Back

tanθ = sinθ/cosθ.

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 cotangent and tangent?

Back

cotθ = 1/tanθ.