Trigonometric Identities

Front

What is the identity for (secθ-1)(secθ+1)?

Back

tan²θ

Front

Prove that 1 + tan²x / (cscx secx) = ?

Back

tanx

Front

What is cscx - cotx equal to?

Back

(1 - cosx) / sinx

Front

Simplify tanx/sinx + secx.

Back

2secx

Front

What is sec²θ - tan²θ?

Back

1

Front

Define secant (secθ).

Back

Secant is the reciprocal of cosine: secθ = 1/cosθ.

Front

Define cosecant (cscx).

Back

Cosecant is the reciprocal of sine: cscx = 1/sin x.

Front

What is the Pythagorean identity involving sine and cosine?

Back

sin²x + cos²x = 1.

Front

What is the relationship between tan, sin, and cos?

Back

tanx = sinx / cosx.

Front

What is the identity for sin²x in terms of cos²x?

Back

sin²x = 1 - cos²x.