Question

7. The angles of a triangle are in A.P. and the number of degrees in the least angle is to the
number of degrees in the mean angle as 1 : 120. Find the angles in radians.
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Answer 1

Step-by-step explanation:

first angles are in AP so take x,x+d,x+2d.

we know that sum of all angles of triangle is 180

so make 1 equation from here.

now ratio of least angle and mean angle is given so make another equation and you will get your answer.