(a)[3]
Calculate $AC$.
(b)[4]
Calculate angle $ADC$.
(c)[4]
Calculate the area of the tent's floor.
(d)[3]
Calculate the angle that $AD$ makes with the ground.
Mathematics 0580 · IGCSE · Pythagoras' theorem and trigonometry in 3D
Pythagoras' theorem and trigonometry in 3D — practice question
The diagram depicts tent ABCD. The tent's front face is an isosceles triangle ABC, with $AB = AC$. The two side faces are congruent triangles ABD and ACD. The diagram is labelled NOT TO SCALE.