We can use the sine rule and cosine rule to calculate lengths and angles in non-right-angled triangles. Although a perpendicular angle and therefore the hypotenuse are missing in these triangles, the sine and cosine rules are still based upon right-angled-trigonometry. Are you able to give proof for both rules? In what way do the two marines in the picture use trigonometry to calculate their position? |
2 Comments
7/16/2022 03:46:34
I thoroughly enjoyed this blog thanks for sharing.
Reply
Leave a Reply. |
ExplainingMaths.comMy name is John van der Marel and I teach mathematics at MES Cairo to students of KS3, KS4 (IGCSE) and IBDP. Archives
February 2015
Categories |