5. If one of the exterior angle of a triangle is 105° and the interior opposite angles are in the ratio 3:4 then find all the interior angles of the triangle.
this is the question of subject Math chapter name Triangles and their properties standard 7
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answer is 45degree , 60 degree , and 75 degree
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let the number be x
150-x =180
x=30
30+3x+4x=180 (sum of triangle is 180)
x=21.42
3×21.42=70
4×21.42=80
30
total= 180
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