Practice Trig Identities

Front

What is the identity for \( \tan x \cdot \csc x \cdot \cos x \)?

Back

1

Front

What is \( \frac{\left(\sec^2x-1\right)}{\sec^2x} \) simplified?

Back

\( \sin^2x \)

Front

Simplify \( \sin^2x + \cos^2x \).

Back

1

Front

What is the result of \( \sec x - \sec x \sin^2x \)?

Back

\( \cos x \)

Front

What is the first strategy to simplify a trigonometric expression?

Back

Rewrite into sines and cosines

Front

What is the Pythagorean identity?

Back

\( \sin^2x + \cos^2x = 1 \)

Front

What is the definition of \( \sec x \)?

Back

\( \sec x = \frac{1}{\cos x} \)

Front

What is the definition of \( \csc x \)?

Back

\( \csc x = \frac{1}{\sin x} \)

Front

What is the relationship between \( \tan x \) and \( \sin x \) and \( \cos x \)?

Back

\( \tan x = \frac{\sin x}{\cos x} \)

Front

What is the double angle formula for sine?

Back

\( \sin(2x) = 2\sin x \cos x \)