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cos^(-1)(-cos""(2pi)/(3)) is equal to :...

`cos^(-1)(-cos""(2pi)/(3))` is equal to :

A

`(pi)/(5)`

B

`(2pi)/(3)`

C

`(pi)/(2)`

D

`(pi)/(3)`

Text Solution

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The correct Answer is:
D
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ACCURATE PUBLICATION-PROBABILITY -SAMPLE QUESTION PAPER -I ( SOLVED ) ( SECTION -A)
  1. Function f : R rarr R f(x) = 3 x -5 is

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  2. Relation given by R={(1,1),(2,2),(1,2),(2,1)} in the set A={1,2} is :

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  3. cos^(-1)(-cos""(2pi)/(3)) is equal to :

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  4. If [[1,-x],[4,-3]] =[[1,8],[4,-3]] then value of x is :

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  5. If order of matrix A is 2 xx 3 and order of matrix B is 3 xx 5, then o...

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  6. If 'f(x)= {[Kx+1,xle5],[3x-5,x>5]:}' is continuous at x=5 then value o...

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  7. (d)/(dx){tan^(-1)(e^(x))} is equal to :

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  8. Slope of tangent to the curve 'y = x^2-2x+1' at x=3 is :

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  9. int3x^(2)dx is equal to :

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  10. int0^(pi/2) sin^(1/2x)/(sin^(1/2)x+cos^(1/2)x)dx is equal to :

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

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

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

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  14. Direction ratios of line given by line (x-1)/3=(2y+6)/12=(1-z)/-7 are...

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

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  16. 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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  17. Value of sin^-1(1) is

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

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

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

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