use c over a and b

2020-09-22 21:36:24 -04:00 · 2020-09-22 21:36:24 -04:00 · 21c8b20e57
commit 21c8b20e57
parent 834ee6b5f3
1 changed files with 1 additions and 1 deletions
--- a/docs/sph3u7.md
+++ b/docs/sph3u7.md
@ -210,7 +210,7 @@ $$
 The length of resultant vector can then be found using the Pythagorean theorem.

 $$
-|\vec{c}|=\sqrt{(a_{x}+b_{x})^2 + (a_{y}+b_{y})^2}
+|\vec{c}|=\sqrt{(c_{x})^2 + (c_{y})^2}
 $$

 To find the resultant direction, use inverse tan to calculate the angle of the vector using the lengths of its components.