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Let hat(a) and hat(b) be two unit vector...

Let `hat(a) and hat(b)` be two unit vectors. If the vectors `hat(c) = hat(a) + 2hat(b) and hat(d) = 5hat(a) - 4hat(b)` are perpendicular to each other, than the angle between `hat(a) and hat(b)` is

A

`(pi)/(3)`

B

`(pi)/(4)`

C

`(pi)/(6)`

D

`(pi)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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