Application of Sine and Cosine Ratios in Multi-Triangle Systems
Application of Sine and Cosine Ratios in Multi-Triangle Systems
Secondary 3
The diagram shows two triangles, \(\Delta ABC\) and \(\Delta ACD\).
\(\angle CAD = 90{}^\circ\), \(\angle ABC = 25{}^\circ\), \(AD = 4\) cm and \(AB = 8\) cm.
Find
- \(\angle ADC\),
- the length of \(CD\),
- the length of \(BC\).
Video Solution:
Video solution locked
Solution:
Solution locked
Sign in to view the step-by-step solution
Similar questions are unavailable for this question.
Answer:(i) \(57.7^\circ\) (ii) \(7.49\text{ cm}\) (iii) \(1.90\text{ cm}\)
Need help? Join our JC Math tuition classes.
Learn more