Solve the triangle A degree Type your answer in degrees Rou

Solve the triangle. A = degree (Type your answer in degrees. Round to one decimal place as needed.) B = degree (Type your answer in degrees. Round to one decimal place as needed.) C = degree (Type your answer in degrees. Round to one decimal place as needed.)

Solution

a = 14 inch ; b= 19 insh

c = 25inch

Applky cosine rule

cosA =( b^2 +c^2 -a^2)/2bc

= ( 19^2 +25^2 -14^2)/(2*25*19)

A = 33.7 deg

Again use conie rule :

cosB = ( a^2 +c^2 - b^2)/(2*a*c)

= (14^2 + 25^2 - 19^2)/(2*14*25)

B = 48.9 deg

C = 180 -A -B = 97.4 deg