Give It a Shot!
Use these flashcards to review the identities you have learned so far that will be used throughout this lesson. Click the flashcard to check your answer.
tangent quotient identity
\( \tan\theta = \frac{\sin\theta}{\cos\theta} \)
cotangent quotient identity
\( \cot\theta = \frac{\cos\theta}{\sin\theta} \)
cosecant reciprocal identity
\( \csc\theta = \frac{1}{\sin\theta} \)
secant reciprocal identity
\( \sec\theta = \frac{1}{\cos\theta} \)
cotangent reciprocal identity
\( \cot\theta = \frac{1}{\tan\theta} \)
sine and cosine Pythagorean identity
\( \sin^{2}\theta + \cos^{2}\theta = 1 \)
tangent and secant Pythagorean identity
\( 1 + \tan^{2}\theta = \sec^{2}\theta \)
cosecant and cotangent Pythagorean identity
\( 1 + \cot^{2}\theta = \csc^{2}\theta \)
sine even-odd identity
\( \sin{- \theta} = - \sin\theta \)
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