Solve the triangle a 215 b 155 c 165 What is the degree m

Solve the triangle. a = 21.5 b = 15.5 c = 16.5 What is the degree measure of angle A? degree (Simplify your answer. Type an integer or a decimal. Round to the nearest tenth if needed.) What is the degree measure of angle B? degree (Simplify your answer. Type an integer or a decimal. Round to the nearest tenth if needed.) What is the degree measure of angle C? degree (Simplify your answer. Type an integer or a decimal Round to the nearest tenth if needed.)

Solution

a=21.5,b=15.5,c=16.5

A=cos^-1(b²+c²-a²/2bc)=84.4degree

B=cos^-1(a²+c²-b²/2ac)=45.8degree

C=180-A-B=49.8degree