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What is the dot product of two vectors ...

What is the dot product of two vectors of magnitude 3 and 5, if the angle between them is `60^(@)`?

A

15

B

8

C

7.5

D

5.3

Text Solution

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The correct Answer is:
C
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TARGET PUBLICATION-SCALARS AND VECTORS-Evaluation Test
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  9. A force of -F hatk acts on O, the origin of the coordinate system. The...

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  10. If hat(i), hat(j) and hat(k) are unit vectors along x,y and z-axis res...

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  12. Two vectors vec(A) and vec(B) lie in plane, another vector vec(C ) lie...

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  13. A particle acted upon by constant forces 5hat(i) + hat(j) - 2hat(k) an...

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  15. The angel subtended by the vector A = 6hat(i) + 3hat(j) + 4hat(k) with...

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  16. A particle moves in the x-y plane under the action of a force vec(F) s...

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  17. vec(A) and vec(B) are two vectors given by vec(A)=2hat(i)+3hat(j) ...

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  18. A vector vec(A) is along the positive x-axis and its vector product w...

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  19. What is the area of the triangle formed by sides vec(A) = 2hat(i) - 3h...

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  20. The component of vector vec(A) = a(x) hat(i) + a(y) hat(j) + a(z) hat(...

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