MathMatters

https://youtu.be/9Ek61w1LxSc?si=bhv0nKMTnuq1_jRS

How to solve equations of the form ax = b | Linear equations | Algebra I | Khan Academy Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equa...

Here's a problem on the sine and cosine rule that involves bearings. I'll be posting more examples on the sine and cosine rules since mocks, prelims and finals are right around the corner.

Sine & Cosine Rules applied to Bearings : ExamSolutions Maths Revision Go to http://www.examsolutions.net/ for the index, playlists and more maths videos on sine rule, cosine rule, bearings and other maths topics.THE BEST THANK ...

The angle sum in any triangle is 180 degrees. Where does this magic number come from???
Using the concept of parallel lines, alternate and corresponding angles, the proof below explains it.