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Prove that tan62^@=2tan34^@+tan28^@...

Prove that `tan62^@=2tan34^@+tan28^@`

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Prove that tan 20^@tan 40^@ tan 60^@ tan 80^@ = 3

Prove that tan20^(@) tan40^(@) tan80^(@) = sqrt3

Prove that, tan62^(@) = 2tan 34^(@) + tan28^(@)

Prove that tan20^@tan30^@tan40^@tan80^@=1

Prove that tan6^@tan42^@tan66^@tan78^@=1

Prove that tan 7^@ tan23^@ tan60^@tan67^@tan83^@ = sqrt3 .

Prove that tan1^@tan2^@tan3^@...tan88^@tan89^@=1

Prove that tan 1^@ tan 2^@ tan 3^@........ tan 88^@tan89^@=1

Prove that tan 70^@=tan 20^@+2tan50^@

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UNITED BOOK HOUSE-MCQ-EXERCISE
  1. If f(x)=e^(x+a),g(x)=x^(b^2) and h(x)=e^(b^2x),show that (g[f(x)])/(h(...

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  2. Prove that tan (pi/12)tan((5pi)/12)tan ((7pi)/12)tan((11pi)/12)=1

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  3. Prove that tan62^@=2tan34^@+tan28^@

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  4. If cosalpha+cosbeta=1/3and sinalpha+sinbeta=1/4,show that tan ((alpha+...

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  5. Show that 1/(sin10^@)-sqrt3/(cos10^@)=4

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  6. Show that secalpha-tanalpha=cot(pi/4+alpha/2)

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  7. Solve :3sin^2x+7cos^2x=6

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  8. In triangleABC angleB=60^(@), c=2sqrt(3), b =3sqrt(2) then find angle...

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  9. If (2^(2n)-1)is divisible by 3, then show that [2^(2(n+1))-1]is also d...

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  10. Simplify : (1+i)^(-2)-(1-i)^(-2)

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  11. Find a quadratic equation with rational co-efficient whose one root is...

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  12. State fundamental theorem of algebra

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  13. If ^9P5 + 5. ^9P4 = ^I0Pr, find r.

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  14. If ^nC4=21xx^(n//2)C3find n.

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  15. Find the middle term (or terms) in the following expansions: (iii) (...

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  16. The sum to n terms of an A.P. is n^(2). Find the common difference.

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  17. If the slope of the line joining the points (2k,-2) and (1,-k) be (-2)...

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  18. Find the equation to the circle whose parametric equations are, x = ...

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  19. Find the equation- of the porabola whose co-ordinates of the vertex an...

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  20. Find the the co-ordinates of the point on the ellipse x^2 + 2y^2 =4 wh...

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