Question

The sum difference and cross product of two vectors a and b are mutually perpendicular if

Answer 1

Step-by-step explanation:

condition for three vectors to be mutually perpendicular is

$s.d = d.c = c.s = 0$

let s be the sum,d the and difference the cross product

the sum and difference lie in the same plane as the vectors themselves.

1. $(a + b).(a - b) = {a}^{2} - {b}^{2} = 0$
2. $(a \times b).(a + b) = 0$

• $(a - b).(a×b) = 0$

Answer 2

Answer:

k

Step-by-step explanation: