Maria and Tram want to build a dirt bike ramp. They know the dimensions of the base (350 cm) and the height (25 cm), but they need to know the angles to decide how to cut the wood accurately. Maria made a scale drawing and used it to estimate that the slope angle (`x`) is about 4 degrees. Tram thinks the angle is about 10 degrees. But Tram thinks there must be a way of using the calculator to get the slope angle.