In a right triangle ABC, right-angled at B, the longest side is ___?
The correct option is C AC
In a triangle, the side opposite to the biggest angle is largest one.
In the above question, it is given that the triangle is a right angled triangle right angle at B. So, the other two angles combinely would measure 90∘.
So, the longest side would be the one opposite to the right angle, i.e. AC.
Hence, AC is the longest side.