Find the length AC, to two decimal places.I got 3.21. Why is this wrong? Thank you!
Does AC look like it is only .21 longer than AB ?
Cosine rule
AC^2 = 3^2 + 7^2 - 2 (3)(7)cos 50=.......
16.71 is still wrong?
AC^2 = 3^2 + 7^2 - 2 (3)(7)cos 50= 31.00
AC = sqrt 31 =5.568
Thank you!
+218 
I got 3.21. Why is this wrong? Thank you!
