Question

Determine whether the triangle having sides (a-1)cm , 2root a cm and (a+1 cm is a right triangle

Answer 1

Answer:

Step-by-step explanation: YES it is right because:

(hypotenuse)² = (base)² + (perpendicular)²

(a+1)² = (a-1)² + (2√a)²

(a²+1+2a) = (a²+1-2a)  +  (4a)

a²+1+2a = a²+1-2a  +  4a

a²-a² +1-1 +2a =2a

2a=2a

Lhs=Rhs

hence proved.

Answer 2

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