Question

3. Find the angles of the triangle whose sides are
x + y - 4 = 0, 2x + y - 6 = 0 and 5x + 3y - 15 = 0.​

Answer 1

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

HOPE IT HELPS