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The angle made by the vector 3hati-4hatj...

The angle made by the vector `3hati-4hatj+5hatk` with the Z-axis is...a)`(pi)/(4)` b)`cos^(-1)((1)/(sqrt(2)))` c)`0` d)`cos^(-1)((3)/(5sqrt(2)))`

A

`(pi)/(4)`

B

`cos^(-1)((1)/(sqrt(2)))`

C

0

D

`cos^(-1)((3)/(5sqrt(2)))`

Text Solution

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The correct Answer is:
A
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