From: Andrew Lorimer <andrew@lorimer.id.au>
Date: Wed, 17 Oct 2018 23:10:21 +0000 (+1100)
Subject: vector projections (2d)
X-Git-Tag: yr11~20
X-Git-Url: https://git.lorimer.id.au/notes.git/diff_plain/fb12565545a31753cdb545b9a1e8ee3a650bbb03

vector projections (2d)
---

diff --git a/spec/vectors.md b/spec/vectors.md
index 86bd95b..f832af7 100644
--- a/spec/vectors.md
+++ b/spec/vectors.md
@@ -97,3 +97,7 @@ If $\vec{a} \cdot \vec{b} = 0$, then $\vec{a} \perp \vec{b}$ (since $\cos 90 = 0
 ## Finding angle between vectors
 
 $$\cos \theta = {{\vec{a} \cdot \vec{b}} \over {|\vec{a}| |\vec{b}|}} = {{a_1 b_1 + a_2 b_2} \over {|\vec{a}| |\vec{b}|}}$$
+
+
+## Vector projections
+