Question

PLEASE GIVE ME SOLUTION (b)​

Answer 1

Step-by-step explanation:

For finding need we need to find their slopes

If we got the product of any 2 slopes equal to - 1 it means there is a 90 angle in that

Slope of AB = 5-4 / 3 - 4 = - 1 = say it m1

Slope of BC =5+1 / 3 +1 = 3 /2 = say it m2

Slope of AC = - 1-4/ - 1-4 = 1 say it m3

Its clear now slope product of m1 and m3 is - 1

m1 × m3 = - 1

It means there is a 90 degree angle available in that triangle so it should be a right angle triangle.