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If vecA = 3hati - 4hatj and vecB=-hati -...

If `vecA = 3hati - 4hatj` and `vecB=-hati - 4hatj` calculate the direction of `vecA + vecB`

A

`tan^(-1)(4)` with +x- axis in clock wise

B

`tan^(-1)(4)` with -x- axis in clock wise

C

`tan^(-1)(4)` with +x- axis in anti clock wise

D

`tan^(-1)(4)` with -x- axis in anti clock wise

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The correct Answer is:
A
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AAKASH SERIES-MOTION IN A PLANE-EXERCISE-2 (Addition, Subtraction and Resolution)
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  2. A car makes a displacement of 100 m towards east and then 200 m toward...

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  3. If vecA = 3hati - 4hatj and vecB=-hati - 4hatj calculate the directio...

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  4. Two vectors are given vec(a) = -2hat(i) + hat(j) - 3hat(k) and vec(b) ...

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  5. One of the rectangular components of a velocity of 20 ms^(-1) is 10 m...

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  6. A car weighing 100kg is on a slope that makes an angle 30° with the ho...

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  7. To go from town A to town B a plane must fly about 1780 km at an angle...

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  8. Two vectors a and b have equal magnitudes of 12 units. These vectors a...

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  9. Angle (in rad) made by the vector sqrt(3)hati+hatj with the x-axis is

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  10. A bird moves in such a way that it has a displacement of 12 m towards ...

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  11. The direction cosines of a vector vecA are cos alpha=(4)/(5sqrt(2)),co...

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  12. If vecP=hati+2hatj+6hatk tits direction cosines are

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  13. If vecA=2hati-3hatj+4hatk its components in yz plane and zx plane are ...

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  14. If vectors vecA and vecB are 3hati - 4hatj + 5hatk and 2hati + 3hatj -...

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  15. A vector 3hati+4hatj rotates about its tail through an angle 37^(@) in...

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  16. Maximum and minimum magnitudes of the resultant of two vectors of magn...

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  17. The resultant of two equal forces is 141.4N when they are mutually per...

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  18. The magnitudes of two vectors vecP and vecQ differ by 1. The magnitude...

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  19. Given a +b+c+d=0 which of the following statement is incorrect

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