Posted by miles on Tuesday, October 26, 2010 at 9:16pm.
recall that the sum of the interior angles of any triangle is 180 degrees,, thus:
3x + (x+10) + (2x-40) = 180
6x - 30 = 180
6x = 210
x = 35
therefore, the angles are:
3x = 3(35) = 105
x+10 = 35+10 = 45
2x-40 = 2(35)-40 = 30
..and the smallest angle is 30 degrees
so there,, :)
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