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The angle between vec(A) = hat(i) = 2hat...

The angle between `vec(A) = hat(i) = 2hat(j) - hat(k) and vec(B) = - hat(i) + hat(j) - 2hat(k)` is

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The angle between A= hat(i) + 2hat(j) - hat(k) and bar(B)= -hat(i) + hat(j)-2 hat(k) is

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    B
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  • The unit vector parallel to the resultant of the vectors vec(A) = 4 hat(i) + 3hat(j) + 6hat(k) and vec(B) = - hat(i) + 3hat(j) - 8hat(k) is

    A
    `(1)/(7) (3 hat(i) + 6hat(j) - 2hat(k))`
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    `(1)/(2) (3hat(i) + 6hat(j) + 2hat(k))`
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  • If vec(F) = hat(i) + 2hat(j) + hat(k) and vec(V) = 4hat(i) - hat(j) + 7hat(k) find vec(F).vec(V)

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