Simplifying/Verifying Trig Identities

Front

What is the Pythagorean identity for sine and cosine?

Back

sin²θ + cos²θ = 1

Front

Simplify: sin²θ/cos²θ

Back

tan²θ

Front

What is the reciprocal identity for sine?

Back

cscθ = 1/sinθ

Front

What is the reciprocal identity for cosine?

Back

secθ = 1/cosθ

Front

What is the reciprocal identity for tangent?

Back

cotθ = 1/tanθ

Front

Simplify: tanx * cotx

Back

1

Front

If sinθ = 3/5 and θ is in Q II, find cosθ.

Back

-4/5

Front

If sinθ = 3/5 and θ is in Q II, find secθ.

Back

-5/4

Front

What is the definition of cotangent?

Back

cotθ = cosθ/sinθ

Front

Simplify: tan²x + 1

Back

sec²x