Question

The angle of a traingle are (a-d)°,a°and (a+2d)°, the number of degree of the greatest angle is 80. Find all the angle in radian.

Answer 1

Step-by-step explanation:

They have already given that

a+2d=80----1

we know that sum of all angles in a triangle is 180° so

(a+2d)+(a-d)+a=180

3a+d=180----2

by solving equations 1and 2 we get,

d=12 and a=56

so the angles are,

a-d=56-12=44-1st angle

a=56-2nd angle

a+2d=80-3rd angle