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Cosine theorem simply explained In this math learning video I (Susanne) explain how you can use the cosine theorem to calculate a missing side and angle. We will calculate an example of trigonometry and rearrange the formula. Mathematics simply explained. 0:00 Introduction - Cosine theorem simply explained 0:27 Cosine theorem formula 3:38 Example 1: Cosine theorem calculate side 6:24 Example 2: Cosine theorem calculate angle 10:34 Triangle interior angle sum 11:24 Until the next video :) Become a channel member now and support my channel: ➤ https://www.youtube.com/mathematrick/... ???? ???? MY COMPLETE EQUIPMENT ➤ https://mathematrick.de/mein-equipment/ Feel free to support me with a few coins for a cup of tea! ???? ➤ https://www.paypal.me/MathemitSusanne ❤️ ABOUT ME ???? My Insta: @mathema_trick ???? My website: http://www.MathemaTrick.de ???? My email: [email protected] ???? My band: / moonsunband Address for business inquiries and fan mail: Susanne Scherer Gaustraße 8, F32 67655 Kaiserslautern Please send packages and parcels directly to the DHL Packstation: Susanne Scherer 1054501450 Packstation 179 67655 Kaiserslautern #Cosine theorem #cos #MathemaTrick