Question

The angles of a triangle are in A.P and the least angle is 40°. The greatest angle in radians is

Answer 1

Answer:

4π/9

Step-by-step explanation:

if angles are in A.P

then the angles are 40,60,80

the greatest angle is 80 degrees

in radians 4π/9

Answer 2

Answer:

4 pi / 9

Step-by-step explanation:

use arithmetic progression.

 a +  ( a+d) + ( a+2d ) = 180

 40 + ( 40+d ) + ( 40+2d) = 180

  d = 20

hence 40 , 40+20 , 40+2(20

thus 40 , 60 , 80

among them biggest is 80 ..in radian 4 pi / 9