JEE Main2002MathematicsBasics of MathematicsActual
If a, b, c are distinct +v e real numbers and a^2+b^2+c^2=1 then a b+b c+c a is
Options
- Aless than 1
- Bequal to 1
- Cgreater than 1
- Dany real no.
Correct answer
A. less than 1
Step-by-step solution
a b+b c+c a= (a+b+c)^2-1 2 < 1