Danho

Paper 1 · Trigonometry

In triangle ABCABC, a=14.7a = 14.7 cm, c=17.3c = 17.3 cm, B=64.2°B = 64.2° and C=65.3°C = 65.3°. Find angle AA correct to the nearest 0.1°0.1°.

A25.8°25.8°
B50.5°50.5°
C65.3°65.3°
D115.5°115.5°
Explanation: The angles of a triangle sum to 180°180°: A=180°64.2°65.3°=50.5°A = 180° - 64.2° - 65.3° = 50.5°.

Derived from ZIMSEC Mathematics Paper 1, June 2011, Q6

View this paper's sittings and topics

More questions from this paper

Get the full paper, not just one question

Danho has every sitting for this paper, with your progress tracked question by question, offline.

Get it on Google Play
Download on the App Store