## 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 \(\sin 2A\).

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Friday, January 26, 2018

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