1. The problem statement, all variables and given/known data A gun has a muzzle speed of 80 meters per second. What angle of elevation should be used to hit an object 150 meters away? Neglect air resistance and use g = 9.8m/sec2 as the acceleration of gravity. 2. Relevant equations x = (vcos//theta)t y = (vsin//theta)t - 1/2gt^2 g = 9.8 m/sec^2 3. The attempt at a solution i substituted the given values: x should be 150 and y should be 0 right? 150 = (80 cos\\theta)t 0 = ( 80sin\\theta)t - 4.9t^2 i can't figure out how to eliminate a variable or how to begin to solve for //theta i solved for t using the "x" equation ( t = 15/8cos\\theta) and put that into the "y" equation and i got this... 0 = 150tan//theta - 73.5/64(sec\\theta)^2 where do i go from here to find \\theta?