Q. 494.0( 3 Votes )
The angles of a triangle are in the ratio 3:5:7. The triangle is
A. acute angled
B. right – angled
C. obtuse angled
D. isosceles
Answer :
Let x be the common multiple.
3x + 5x + 7x = 180
15x = 180
x = 180/15
x = 12
3x = 3 X 12 = 36
5x = 5 X 12 = 60
7x = 7 X 12 = 84
Since, all the angles are less than 90o. So, it is acute angled triangle.
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