In a triangle ABC,a=3,b=5,c=7,show tha the triangle is obtuse angled
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let
angle A=3x
B=5x
C=7x
measure of all angles of triangle =180
A+B+C=180
3X+5X+7X=180
15X=180
X=180/15
x=12
now all the angles,
3×12=36°
5×12=60°
7×12=84°
angle A=3x
B=5x
C=7x
measure of all angles of triangle =180
A+B+C=180
3X+5X+7X=180
15X=180
X=180/15
x=12
now all the angles,
3×12=36°
5×12=60°
7×12=84°
Siddhartha1111:
Thanx,but its not answer
Its not the right one
then what could be the method
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