Question

The angle between A⃗=^i +^j and B⃗=^i−^j is ​

Answer 1

Answer:

90 degrees

Explanation:

as dot produc of both the vector is zero that means angle between them is 90 degrees.

Answer 2

Answer:

90⁰

Explanation:

(^i+^j).(^i-^j)= ^i² - ^j²

                  =1-1

                  =0

dot product is 0 so angle between them is 90°