The angle between VC and the plane is \(y\). It is not possible to use trigonometry to calculate the angle \(y\) because the length of another side is required. Pythagoras can be used to calculate ...

This circle has the centre at the origin and a radius of 1 unit. The point P can move around the circumference of the circle. At point P the \(x\)-coordinate is \(\cos{\theta}\) and the \(y ...