Unit 3 AP Precalculus Practice Test 2026

If cos x = \frac{12} {13} , sin y = \frac{4} {5} , and x and y are acute angles, what is the value of sin (x − y)?

\frac {\sqrt{1 - a^{2}}} {a} \frac{144} {65} , - \frac{8} {π} - \frac{33} {65}

- \frac{33} {65}

Correct answer: - \frac{33} {65}

Access more questions from this quiz

Continue to Unit 3 AP Precalculus Practice Test 2026 for more practice questions and the full quiz experience.