On the second level, students should determine the altitude by making the tangent of the elevation angle equal to unknown altitude divided by the distance from launch point and solve the equation. They will measure two elevation angles and draw an oblique triangle the base side being the distance between their positions on the ray. Using this side, the closer elevation angle and the sine function, students will be able to figure out the altitude of a rocket with any non-right angle trajectory to the level plane. Student grades will be based on scale drawings of triangles, angles of elevation and the appropriate calculations. Also, the answers to the questions below will be considered.
Similar triangles have the same shape but a different .
A real rocket's mass is mostly .