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If veca*vecb=|vecaxxvecb|, then angle be...

If `veca*vecb=|vecaxxvecb|`, then angle between vector `veca` and vector `vecb` is :

A

`(pi)/(2)`

B

`(pi)/(6)`

C

`(pi)/(4)`

D

`(pi)/(3)`

Text Solution

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The correct Answer is:
C
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ACCURATE PUBLICATION-PROBABILITY -SAMPLE QUESTION PAPER -I ( SOLVED ) ( SECTION -A)
  1. int0^(pi/2) sin^(1/2x)/(sin^(1/2)x+cos^(1/2)x)dx is equal to :

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  2. Degree of differential equation (d^(2)y)/(dx^(2))-2(dy)/(dx)+3y=0 is :

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  3. If veca*vecb=|vecaxxvecb|, then angle between vector veca and vector v...

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  4. If veca.vecb=0 then angle between vector veca and vecb is:

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  6. Maximum value of Z=3x+y for the constraints x+yle4, xge0, yge0 is :

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  7. If P(A) = 1/2, P(B) = 3/8 and P(A nn B) = 1/5· then P(A/B) is equal to...

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  8. Value of sin^-1(1) is

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  9. If A=[a(ij)](2×3) such that a(ij)=i+j then a 11=

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  10. If |[x,0],[7,1]|=|[3,0],[7,1]| then x=

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  11. If 'y=cos x ' then at'x=0', 'dy/dx=..........'.

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  12. int(0)^(5)dx= ……………….

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  13. Order of the differential equation (d^(2)y)/(dx^(2))-((dy)/(dx))^(3)+y...

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  14. Direction ratios of a line which is perpendicular to the plane '3x-y+2...

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  15. Probability of occurrence of impossible event = ………. .

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  16. If A is any square matrix then A + A' is a :

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  17. If y=10x then (dy)/(dx)=10.

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  18. If y=tanx then (dy)/(dx)=sec^(2)x

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  19. int (dx)/(x(x^2 + 1)) equals :

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  20. xdy-ydx=0 is a variable separable type of differential equation.

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