If a, b, c are distinct positive real numbers and a^2+b^2+c^2=1 , then the value of a b+b c+c a is

Step-by-step solution

Given, a, b and c are positive distinct real number. Also, a^2+b^2+c^2=1 As square of a number is also positive, so aligned & 0 < a^2, b^2, c^2 < 1 & 0 < a, b, c, < 1 aligned Values of a b+b c+c a is less than one.