Answer:
i) 3.81 metres
ii) 17.5
Explanation:
i) use the pythagorean theorem (a^2+b^2=c^2)
ii) we know 2 side lengths and from the angle the ramp makes with the ground, those side lengths are the opposite and hypotenuse. You can now use the arc sine of 1.2/4 to get the angle.