Trigonometric Ratios in 3D: Determining the Inclination of Line \(AF\)
Trigonometric Ratios in 3D: Determining the Inclination of Line \(AF\)
Secondary 3
The diagram shows a prism whose cross-section area is a right-angled triangle.
\(AB=24\) cm, \(BC=8\) cm and \(FC=6\) cm.
Calculate
- the length of \(FB\),
- the area of \(\Delta AFB\),
- the \(\angle FAE\).
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Answer:(i) \(10\text{ cm}\) (ii) \(120\text{ cm}^2\) (iii) \(67.4^\circ\)
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