CAPE Pure Mathematics Unit 1 · 2008 (T&T) · Paper 1 · Question Q18

If \beta is an acute angle and \cos\beta = \frac{5}{13}, then \sec\beta =

1. (A)\frac{5}{13}
2. (B)\frac{12}{13}
3. (C)\frac{13}{12}
4. (D)\frac{13}{5}