I need help on this question

A projectile red into the rst quadrant from the origin of a coordinate system will pass through the 2x point (x,y) at time t according to the relationship cot B = 2 where 6 is the angle of elevation of 2y + gt the launcher and g is the acceleration due to gravity (32.2 feet/secondz). An artilleryman is ring at an enemy bunker located 2425 feet up the side of a hill that is 6025 feet away. He res a round, and exactly 2.92 seconds later he scores a direct hit. (a) What angle of elevation did he use? 6:11\" (Do not round until the final answer. Then round to one decimal place as needed.)