From 42321de5c55df22b158d819439ba7bb85cfd81fc Mon Sep 17 00:00:00 2001
From: AnthonyMichaelTDM <68485672+AnthonyMichaelTDM@users.noreply.github.com>
Date: Sat, 14 May 2022 23:42:15 -0700
Subject: [PATCH] update README of orbit because there's an error

https://en.wikipedia.org/wiki/Law_of_cosines
---
 68_Orbit/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/68_Orbit/README.md b/68_Orbit/README.md
index 01fb758c..9e4e9afd 100644
--- a/68_Orbit/README.md
+++ b/68_Orbit/README.md
@@ -23,7 +23,7 @@ of orbit    <       ^ ship
 The distance of the bomb from the ship is computed using the law of consines. The law of cosines states:
 
 ```
-D = SQUAREROOT( R**2+D1**2+R*D1*COS(A-A1) )
+D = SQUAREROOT( R**2 + D1**2 - 2*R*D1*COS(A-A1) )
 ```
 
 Where D is the distance between the ship and the bomb, R is the altitude of the ship, D1 is the altitude of the bomb, and A-A1 is the angle between the ship and the bomb.