If | a |=3,| ~b |=4 , then a value of for which a + b is perpendicular to a - b is

Step-by-step solution

Since, (a+ b) (a- b) , then aligned (a+ b) (a- b) &=0 |a|²- ²|b|² &=0 |a² |= ²|b|² &= |a| |b| = 3 4 aligned