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The angle between the two vectors vecA=3...

The angle between the two vectors `vecA=3hati+4hatj+5hatk` and `vecB=3hati+4hatj-5hatk` is

A

`60^@`

B

`0^@`

C

`90^@`

D

None of these

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The correct Answer is:
C
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PATHFINDER-VECTOR-I AND VECTOR-II-QUESTION BANK
  1. The value of n so that vectors 2hati+3hatj-2hatk, 5hati+nhatj+hatk and...

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  2. If veca and vecb are two vectors then the value of (veca+vecb)xx(veca-...

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  3. The angle between the two vectors vecA=3hati+4hatj+5hatk and vecB=3hat...

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  4. Maximum and minimum values of the resultant of two forces acting at a ...

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  5. Which of the following expressions are meaningful ?

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  6. The vector i+xj+3 si rotated through an angle theta and doubled in mag...

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  7. Given sin(A+B)=sinAcosB+cosAsinB, which of the following relationships...

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  8. If y=sinx, then dy/dx=0, for x=

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  9. For the condition x^2-1gt0, we have

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  10. If x=loget, then select the correct option(s)

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  11. The resultant amplitude of two waves is given by R=sqrt(A^2+B^2+2ABcos...

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  12. Two vectors vecA and vecB are inclined at an angle theta with each oth...

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  13. Given veca+vecb+vecc+vecd=0. Which of the following statements is(are)...

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  14. which of the following statement(s) is (are) correct?

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  15. This question has Statement I and Statement II. Of the four choices gi...

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  16. This question has Statement I and Statement II. Of the four choices gi...

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  17. This question has Statement I and Statement II. Of the four choices gi...

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  18. This question has Statement I and Statement II. Of the four choices gi...

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  19. This question has Statement I and Statement II. Of the four choices gi...

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  20. This question has Statement I and Statement II. Of the four choices gi...

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