Question

If a=i + 2j -3K and b= 3i-2j+2k then show that a+b and a-b are perpendicular to each other
​

Answer 1

Answer:

Please check it

Mark it Brainlist

FOLLOW ME

THANK YOU

ANSWER ::

a=i + 2j -3K

b= 3i-2j+2k

a+b = 4i - k

a - b = - 2i+4j-5k

So

(a+b).(a-b) = - 8 + 0 +5 = - 3 # 0

So

a+b and a-b are not perpendicular to each other