/sci/ - Science & Math

i have a question about homework in my physics class
so we just got to two dimensional problems
we were using vector triangles on the day this problem was assigned, not sure how to go about doing it because i don't think enough information was given for me to do it

>a sharpshooter fires a .22 caliber rifle horizontally at a target 75m away.how far does the bullet drop by the time it reaches the target?

Don't I need muzzle velocity or time until bullet hits to do this problem. We were using law of sin/cos/tan on that day too.