Using the sine and cosine rules in non right angled triangles to find the missing sides and angles, and a brief look at the ambiguity in the Sine rule.
Hi Bob, thank you very much for the video. I was just wondering why when rearranging the equation for finding the largest angle it is all divided by 2bc.
8 months late but if you have a right triangle you use trigonometry to find the missing side if you are given theta. But I don't think you can solve a 1 side and 1 angle non right triangle
Hi Archie, with the sine rule, there is an ambiguity in that if sin☆=0.5 then ☆ can be 30 or 150 degrees, ( the geometry should suggset if the angle is obtuse ) some calculators give -30 degrees instead of 150 degrees, easy solution add 180 degrees and bingo hopefully you have the correct obtuse angle.
