Trig Identities Memorization Practice (with double angle)

Front

tanθ = ?

Back

sinθ/cosθ

Front

tanθ = ? (in terms of cotangent)

Back

1/cotθ

Front

What is csc²x in terms of other trigonometric functions?

Back

csc²x = 1 + cot²x

Front

sec(-u) = ?

Back

sec(u)

Front

What is the value of tan x?

Back

tan x = sin x/cos x

Front

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

Back

tanθ = sinθ/cosθ

Front

What is the double angle formula for sin?

Back

sin(2θ) = 2sinθcosθ

Front

What is the double angle formula for cos?

Back

cos(2θ) = cos²θ - sin²θ

Front

What is the Pythagorean identity?

Back

sin²θ + cos²θ = 1

Front

What is the value of secθ?

Back

secθ = 1/cosθ