my teacher gave our class this question and i just dont know what to do first, what formula doi use first????/ im gonna fail!!! A projectile is launched off a building at an angle of 19 degress at 27 m/s. if it lands 40 m from the base of the building, how high is the building?? please dont say the answer, i would really like to try this for myself but i just dont know what to do first.