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Calculate the angle made by $AV$ with the plane $ABCD$.
Mathematics 0580 · IGCSE · Pythagoras' theorem and trigonometry in 3D
Pythagoras' theorem and trigonometry in 3D — practice question
The figure represents a triangular prism whose cross-section is triangle $BCV$. Here, angle $BCV = 90^\circ$, $BC = 5\text{ cm}$, $CV = 4\text{ cm}$ and $AB = 15\text{ cm}$. This sketch is not drawn to scale.