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Prove that:(tan^2 20- tan^2 theta)/(1- t...

Prove that:`(tan^2 20- tan^2 theta)/(1- tan^2 20 tan^2 theta)=tan30 tan theta`

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Prove that : tan 2 theta= (2 tan theta)/(1-tan^2 theta) .

Prove that : tan^2 theta -sin^2 theta =tan^2 theta sin^2 theta .

Prove that : cos 2 theta= (1-tan^2 theta)/(1+tan^2 theta) .

Prove that : tan 3 theta tan 2 theta tan theta= tan3 theta-tan 2 theta-tan theta .

Prove that : (tan 5 theta+tan3 theta)/(tan 5 theta- tan3 theta)= 4 cos 2 theta cos 4theta .

Prove that : sin 2 theta= (2 tan theta)/(1+tan^2 theta) .

Prove that : (1+sin 2 theta-cos 2 theta)/(1+sin 2 theta+ cos 2 theta)= tan theta .

If 3 tan2theta=sqrt3 find theta .

Prove that : tan 3 theta= (3 tan theta-tan^3 theta)/(1-3 tan^2 theta) .

Prove that tan^2theta-sin^2theta=tan^2thetasin^2theta .

JBD PUBLICATION-MODEL PAPER (13)-EXERCISE
  1. In a group of 65 people, 40 like cricket, 10 like both cricket and ten...

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  2. If f (x) =x^3-1/x^3, find the value of f (x) +f (1/x).

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  3. Prove that:(tan^2 20- tan^2 theta)/(1- tan^2 20 tan^2 theta)=tan30 tan...

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  4. Prove, by Mathematical Induction, that for all n in N, 2.7^n+3.5^n-5...

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  5. How many different numbers between 100 and 1000 can be formed from the...

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  6. The ratio of the.A.M. and G.M. of two positive numbers a and b is m : ...

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  7. If the sum to infinity of the series 3+5r+7r^2+………is 44/9. Find r.

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  8. The line 2x-3y=4 is perpendicular bisector of the line AB. If the coor...

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  9. Find the equation of ellipse whose vertices are (pm13,0) and foci are ...

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  10. Find underset(xrarr1)lim f(x), where f(x)={(x^2-1, x le 1),(-x^2-1, x>...

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  11. Find the derivative of x^4-5 at x=10.

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  12. In a single throw of two dice, find the probability of total of 9 or I...

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  13. A bag contains 5 black and 3 white balls. Two balls are drawn at rando...

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  14. A bag contains 5 black and 3 white balls. Two balls are drawn at rando...

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  15. Convert z= (i-1)/(cos frac (pi)(3)+i sin frac (pi)(3)) in polar form.

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  16. Find the modulus and argument of the complex number (1+2 i)/(1- 3i)

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  17. Solve the following system of inequalities graphically: x + 2y le ...

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  18. In an experiment, a solution of a hydrochloric acid is to be kept betw...

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  19. Evaluate: underset(xrarrpi/4)lim (cosx-sinx)/(x-pi/4).

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  20. Find the derivative of sin(x+1) w.r.t. x

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