Answer:
Step-by-step explanation:
This sounds complicated but , Butternight, and maybe there is some difficulty in the ricochet. I think the question is asking if the bullet bounces off a rock and heads North East.... or NE, but you've got it as EN ? Then how far does it go. In my drawing, what is X, is the question.
We need to know how far the bullet travels East, and how far the bullet travels North.
Then we could put those two parts together and find the length of the red line in my drawing. The red line is also referred to as the Magnitude.
To find how far the bullet travels East, use sine and cosine. Do you know these? if not, start knowing :D
Sine(36) = 0.587785....
Cosine(36)=0.809016....
640 * Sine(36) => 640 * 0.587785 = 376.1825.... m North
640 *Cosine(36) => 640 * 0.809016 = 517.7708... m East
Then the total distance traveled by the bullet to the East is 850 + 517.7708 = 1367.7708... m East
we can find the magnitude by using this

= 1418.559.... m NE
I used my calculator to find that. :P