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19. The angle which the vector A = 2i +3j makes with the y-axis, where i and are unit vectors along x- and y-axes, respectively, is 2. cos (3/5) b. cos-(2/3) c. tan (23) d. sin (2/3)

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Similar Questions

Q1

T h e a n g l e w h i c h t h e v e c t o r \vec{A} = 2 \hat{i} + 3 \hat{j} m a k e s w i t h t h e y - a x i s, w h e r e \hat{i} a n d \hat{j} a r e u n i t v e c t o r s a l o n g x - a n d y - a x e s, r e s p e c t i v e l y, i s a . \cos^{- 1} (3 / 5) b . \cos^{- 1} (2 / 3) c . \tan^{- 1} (2 / 3) d . \sin^{- 1} (2 / 3)

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Q2

Q. Angle that the vector A = 2

\hat{i}

+ 3

\hat{j}

makes with y-axis is

a . \tan^{- 1} 3 / 2 b . \sin^{- 1} 2 / 3 c . \tan^{- 1} 2 / 3 d . \cos^{- 1} 3 / 2

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Q3

The angle which the vector

\to A = 2^i + 3^j

makes with the y-axis, where

^i

and

^j

are unit vectors along x- and y-axes, respectively, is

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Q4

If

ˆ i, ˆ j

and

ˆ k

are unit vectors along x, y and z – axes respectively, the angle

θ

between the vector

ˆ i + ˆ j + ˆ k

and vector

ˆ i

is given by

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Q5

The vector

\to A = \to i + \to j

where

\to i, \to j

are unit vectors along X and Y axes respectively makes an angle of ______ with X-axis.

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