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Prove that : "cos"^(-1) ((b+a "cos"x)/(...

Prove that :
`"cos"^(-1) ((b+a "cos"x)/(a+b "cos"x))`
` =2"tan"^(-1)(sqrt((a-b)/(a+b)) "tan" x/2)

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ARIHANT PRAKASHAN-EXAMINATION PAPER 2019-Group-B
  1. Prove that : "cos"^(-1) ((b+a "cos"x)/(a+b "cos"x)) =2"tan"^(-1)(sqr...

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  2. Construct the multiplication table xx(7) on the set {1,2,3,4,5,6}. Als...

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  3. Let R be the relation on the set R of real numbers such that aRb iff a...

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  4. Solve for x, 2 tan ^(-1)(cos x) =tan^(-1) (2"cosec"x).

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  5. Find the probability distribution of number of heads in three tosses...

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  6. If A=[{:(1,2,0),(0,1,3),(-2,5,3):}] then verify that A+A is symmetric ...

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  7. If A=[{:(1,2,3),(3,-2,1),(4,2,1):}] then show that A^(3)-23A-40I=O

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  8. Solve the following : [[x+1,omega,omega^2],[omega,x+omega^2,1],[omega^...

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  9. A person takes 4 tests in succession. The probability of his passing t...

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  10. Find the point on the curve x^(2) + y^(2)- 4xy + 2= 0, where the norma...

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  11. Find the intervals in which the function y=(lnx)/(x) is increasing and...

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  12. If y=e^(x^(e^(x^(e^x)))), then find dy/dx.

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  13. Find (d^2y)/(dx^2) if x=a costheta,y=bsintheta.

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  14. Verify Lagrange.s mean value theorem for f(x)= x^(3)- 2x^(2)-x + 3 on ...

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  15. Find differential equation of the curve y=ae^(3x)+be^(5x).

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  16. Obtain the general solution of the following differential equations. (...

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  17. Find the area of the region bounded by the curve y=6x-x^2 and the x-ax...

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  18. If l(1), m(1), n(1) and l(2), m(2), n(2)  are the direction cosines of...

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  19. Find the point where the line (x-2)/1=y/(-1)=(z-1)/2 meets the plane 2...

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  20. Find a unit vector perpendicular to each of the vectors vec(a) + vec(b...

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