## anonymous one year ago Find the approximate value of b in the triangle shown.

1. anonymous
2. anonymous

answers are a. 13 b. 12 c. 8 d. 5

3. anonymous

i think the answer is 5

4. amoodarya

use "cos" law $a^2+c^2-b^2=2a*c *\cos(B)\\a^2+c^2-2a*c*\cos(B)=b^2\\12^2+10^2-2(10)(12)\cos(24)=b^2$ can you find b?