- #1

jayman011

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## Homework Statement

A gun has a muzzle speed of 80 meters per second. What angle of elevation should be used to hit an object 190 meters away? Neglect air resistance and use as the acceleration of gravity.

## Homework Equations

R = (V^2) (sin(2A)) / g

## The Attempt at a Solution

Ive solved the equation for alpha numerous times

190=80^2(sin(2A)/9.8

A=(sin^-1((190*9.8)/80^2))/2

Get 0.1476 radians in the calculator, but it don't like it, checked to make sure i was in radians, even solved in degrees and converted to radians, still not right, any help would be greatly appreciated.