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Find the angle between the Vector hat(i)...

Find the angle between the Vector `hat(i)+hat(j)` and `hat(i)-hat(j)`.

A

`30^(@)`

B

`60^(@)`

C

`120^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
`cos theta = (vec(A).vec(B))/(AB)= ((1xx1)-(1xx1))/(sqrt(2)sqrt(2))= 0 implies theta= 90^(@)`
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