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Find the value of cot15^(@)....

Find the value of `cot15^(@)`.

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FULL MARKS-SAMPLE PAPER 12-PART
  1. Let X = {a, b,c,d}, and R = { (a,a) (b,b) (a,c)}. Write down the minim...

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  2. Simplify (1)/(2+sqrt3)+(3)/(4-sqrt5)+(6)/(7-sqrt8).

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  3. Find the value of cot15^(@).

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  4. Find the sum 1+4/5+7/(25)+(10)/(125)+ . ..

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  5. Examine whether the matrix ((1,4,9),(4,9,16),(9,16,25)) is singular or...

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  6. For any two vectors veca and vecb prove that |vecaxxvecb|^(2)+(veca*ve...

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  7. Find the derivative of x^(cosx) with respect to x.

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  8. Evaluate int(1)/(4-x^(2))dx.

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  9. The length of the perpendicular drawn from the origin to a line is 6 a...

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  10. Prove that sin 105^(@) + cos 105^(@) = cos 45^(@)

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  11. How many triangles can be formed by joining 15 points on the plane, in...

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  12. Find the equation of the locus of a point such that the sum of the squ...

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  13. If A^(T)=[(4,5),(-1,0),(2,3)]and B=[(2,-1,1),(7,5,-2)], verify the ...

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  14. Show that the points whose position vectors are 2veci+3vecj-5veck,3vec...

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  15. Test the existance of the limit lim(xto1)(4|x-1|+x-1)/(|x-1|),xne1

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  16. If y=tan^(-1)((1+x)/(1-x)) find y'.

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  17. Evalute int(5x^(2)-4+(7)/(x)+(2)/(sqrt(x)))dx

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  18. If x^(2) + x + 1 is a factor of the polynomial 3x^(3) + 8x^(2) + 8x ...

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  19. (a) If f(x)=(x-1)/(x+1) then show that. (i) f((1)/(x))=-f(x) (ii) ...

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  20. Determine the region in the plane determined by the inequalities. x l...

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