Trigonometry Cosine Rule

>> DOWNLOAD LINK 🎞️ #1 <<

>> DOWNLOAD LINK 🎞️ #2 <<

>> COPY / PASTE LINK PLEASE 🎵 MP3 <<

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=Jci0I7fHnC4

This GCSE tutorial on the cosine rule teaches how to use the rule to find missing angles and missing sides. The cosine rule is used in non-right-angled triangles and in situations where we have a side-angle-side set-up. We look at several worked examples including a question using bearings. • #cosinelaw #gcse #maths • Sine rule video:    • Trigonometry: Sine Rule   • Introduction 00:00 • The 2 versions of the cosine rule 00:13 • How to find a missing side 02:30 • How to find a missing angle 05:14 • Example 1 07:11 • Example 2 part a) 10:25 • Example 2 part b) 12:44

#############################