Solve the triangle, if possible. a=4 ft, b 8 ft, c = 18 ft If possible, complete the equation below that uses the law of cosines to find the largest angle of the triangle. OA. There is a solution to the triangle, and the largest angle can be found using the equation B. There is a solution to the triangle, and the largest angle can be found using the equation C. There is a solution to the triangle, and the largest angle can be found using the equation OD. The largest angle does not exist since there are no possible solutions for this triangle. 2 = 2+ (18)2-2) (18)cos A. 2 = ( ) + (4) - 2 () (4) cos B. 2 2 = () +(8) -2 ( (8)cos C.