# Exam-Style Questions on Trigonometric Identities

## Problems on Trigonometric Identities adapted from questions set in previous exams.

### 1.

IB Standard

Consider a right-angled triangle, ABC, with the right angle at vertex C and where $$\sin A = \frac{12}{13}$$

(a) Show that $$\cos A = \frac{5}{13}$$

(b) Find $$\sin 2A$$.

The exam-style questions appearing on this site are based on those set in previous examinations (or sample assessment papers for future examinations) by the major examination boards. The wording, diagrams and figures used in these questions have been changed from the originals so that students can have fresh, relevant problem solving practice even if they have previously worked through the related exam paper.

The solutions to the questions on this website are only available to those who have a Transum Subscription.

Exam-Style Questions Main Page

Search for exam-style questions containing a particular word or phrase:

To search the entire Transum website use the search box in the grey area below.