Posted by **Rose** on Tuesday, April 9, 2013 at 7:49pm.

If the distance between location A to B is straight east 10 km. then from B to C is Nw 18KM How far would you be from point C to A.

Would you not need to more information then this to calculate this answer?

- math -
**rbowh**, Tuesday, April 9, 2013 at 7:54pm
Use the Pythagorean Theorem.

(AB)^2 + (AC) ^2 = (BC)^2

substitute for AB and BC.

then solve for AC

- math -
**Reiny**, Tuesday, April 9, 2013 at 7:58pm
no, just use the cosine law

AC^2 = 10^2 + 18^2 - 2(10)(18)cos45° ---- assuming that Nw meant "northwest"

= 169.44...

AC = √169.44.. = appr 13.02 km

- math -
**rbowh**, Tuesday, April 9, 2013 at 8:45pm
Rose,

Sorry, I got in a hurry.

## Answer this Question

## Related Questions

- science - You are standing 20 cm directly away from from the mid-point of a long...
- Physics - Two particles are fixed along a straight line, separated by a distance...
- physics - a person walks 13.0 degrees north of east for 3.80km. How far due ...
- Physics - A person walks 15.0° north of east for 3.70 km. How far due north and ...
- physics - A person walks 11.0° north of east for 3.30 km. How far due north and ...
- Physics - A person walks 23.0° north of east for 2.60 km. How far due north and ...
- math - a boy travels 15 km due north,then goes 9 km due east,then 3km due south....
- Physics - A person walks 25.0 degrees north of east for 3.10 km. How far would ...
- math - what distance formula would you use to solve this problem? A boat starts ...
- Math - Cameron is located 2 miles due East of an intersection between two ...

More Related Questions