In

/_(/)ABC,(m)/(_(A))=45,AB=20

, and

AC=15

. To the nearest tenth, what is

BC

?\ First, draw and label a triangle.\ Then use the Law of Cosines to write an equation.\

BC^(2)=2^(2)+2^(2)-2*cos

\ Solve for

BC

.\

BC~~

1. In ABC,mA=45,AB=20, and AC=15. To the nearest tenth, what is BC ? First, draw and label a triangle. Then use the Law of Cosines to write an equation. BC2=2+22cos Solve for BC