find the angle of the triangle whose sides are x+y-4=0,2x+y-6=0 and 5x+3y-15=0
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Step-by-step explanation:
1) x+y-4=0
2) 2x+y-6=0
3) 5x+3y-15=0
On solving (1) & (2),
2x+y-6=0
x + (x+y) = 6
x + 4= 6
x = -2 & y = 4-x = 6
On solving (2) & (3),
2x+y-6=0 Or 6x +3y -18 = 0
5x+3y-15=0
x =3 & y = 0
Again, solving (1) & (3) :
x + y = 4 or 5x + 5y = 20
5x+3y=15
y = 2.5
x = 1.5
After plotting points, you can measure angle
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