Can us show us the problems.
It equals 23. 3+4(5) is basically saying 3+ 4 x 5 and with PEMDAS multiplcation is done first. so 4 x 5= 20. 20 + 3= 23. Hope I helped
An 80° angle should be used to shoot the weapon. If you want to precise then it would be an 80.5376° angle. Hope this helps!
Exact form: -square root 2/2 (I don't have a square root symbol)
Decimal form: -0.70710678
