In the figure, $\angle ADC = 90{}^\circ$, $\angle ACD = 42{}^\circ$, $AD = 6.5$ cm, \(AB = 13.

Question

In the figure, $\angle ADC = 90{}^\circ$, $\angle ACD = 42{}^\circ$, $AD = 6.5$ cm, $AB = 13.5$ cm. Find the length of $CD$, the length of $BC$, the area of triangle $ABC$.

Accepted Answer

(i) $7.22\text{ cm}$ (ii) $4.61\text{ cm}$ (iii) $15.0\text{ cm}^2$

The Cosine Code: Unlocking the Mystery of Side \(x\)

The Cosine Code: Unlocking the Mystery of Side \(x\)

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