Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree. a = 6, c = 11, B = 109°
law of cosines for this one
draw a picture to start
make that \[b^2=a^2+c^2-2ac\cos(B)\]
fill in the numbers and you get \(b^2\) right away with a calculator then use the law of sines to find the other angle
this is what i get, very close to 200 for \(b\) http://www.wolframalpha.com/input/?i=6^2%2B11^2-2*6*11*cos%28109%29
i mean for \(b^2\)
These are my choices A. b = 14.1, A = 24°, C = 47° B. b = 19.9, A = 22°, C = 49° C. b = 17, A = 26°, C = 45° D. no triangle
So, did you draw a picture?
I'm not quite sure how to
|dw:1391910581420:dw|
Ok so draw a triangle that has a big 120 degree angle, one side that is 6, and another that is 11. Can you do that?
|dw:1391911097059:dw|
Join our real-time social learning platform and learn together with your friends!