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Show that,tan7 (1^@/2)=sqrt6-sqrt3+sqrt2...

Show that,`tan7 (1^@/2)=sqrt6-sqrt3+sqrt2-2`

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 2-EXERCISE
  1. A box contains 6 white balls and 4 black balls, A ball is drawn at ran...

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  2. In three sets P,Q,R if Pcup R=Pcup Qand Pcap Q=PcapR,then show that Q=...

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  3. Show that,tan7 (1^@/2)=sqrt6-sqrt3+sqrt2-2

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  4. Prove by mathematical induction, n.1+(n-1).2+(n-2).3+…+2.(n-1)+1.n = ...

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  5. If a+ib=sqrt((x+iy)/(p+iq)),show that (a^2+b^2)^2=(x^2+y^2)/(p^2+q^2)

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  6. If the p^(th), q^(th) and r^(th) terms of a G.P. are x, y, z respec...

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  7. The co-efficients of the expansion of (1+x)^(2n-1)and (1+x)^(2n)are P ...

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  8. The co-ordinates of the vertices of a quadrilateral are (3,-2)(6,2)(4,...

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  9. Find the equations of straight line which are perpendicular to the str...

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  10. A circle through the common points of the circles x^2+y^2-x+7y-3=0and ...

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  11. Find the equations of the two straight line parallel to the line 3x+4y...

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  12. Evaluate :lim(xrarr0)((a+x)^2sin(a+x)-a^2sina)/pi

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  13. If the derivatives of f(x) at x=a is f'(a) ,then show that lim(xrarra)...

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  14. If n is a such real number that n>3 .then n^2>9 prove it by the method...

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  15. From 20 cards marked with the 1st 20 natural numbers.one is drawn at r...

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  16. Find the mean of first ten natural numbers

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  17. If tan (theta/2)=tan^3 (phi/2)and tanphi=2tanalpha,then prove that the...

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  18. Find the value of 1/2sec80^@-2cos20^@

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  19. Find the common solution region by graphical method.2x + y ge 2, x - y...

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  20. Solve.sqrt3x^2-sqrt2x+3sqrt3=0

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