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If tan x+tan y = 25 and cot x+ cot y = 3...

If `tan x+tan y = 25` and `cot x+ cot y = 30`, then `tan(x+y)` equals to

A

150

B

200

C

250

D

100

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The correct Answer is:
B
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ALLEN-COMPOUND ANGLES-EX-02
  1. If x +y= 3-cos4theta and x-y=4sin2theta then

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  2. If tan B=(n sin A cos A)/(1-n cos^(2)A), then tan(A+B) equals to

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  3. Prove that: sin, (2pi)/7 + sin, (4pi)/7 +sin, (8pi)/7 = sqrt(7)/2

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  4. If cos alpha=(2cos beta-1)/(2-cos beta) then tan (alpha/2) is equal to

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  5. If (cos3x)/(cosx)=1/3 for some angle x,0<=x<=pi/2 then the value of (s...

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  6. If (5pi)/(2)ltxlt3pi, then the value of the expression (sqrt(1-sinx)+s...

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  7. If AD is the altitude on BC and AD produced meets the circumcircle of ...

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  8. The exact value of (96sin80^0sin65^0sin35^0)/(sin20^0+sin 50^0+sin 110...

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  9. The value of cotx+cot(60^@+x)+cot(120^@+x) is equal to

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  10. The value of cosec(pi/18)-sqrt3sec(pi/18) is a

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  11. If tan x+tan y = 25 and cot x+ cot y = 30, then tan(x+y) equals to

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  12. If cos(alpha+beta) + sin(alpha-beta) = 0 and 2010tanbeta - 1 = 0 then ...

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  13. In a right angled triangle the hypotenuse is 2sqrt(2) times the perpen...

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  14. The value of cot7(1^0)/2+tan67(1^(@))/2-cot67(1^(@))/2-tan7(1^0)/2 is

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  15. about to only mathematics

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  16. Consider the polynomical P(x) = (x - cos36^(@))(x - cos84^(@))(x - cos...

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  17. Consider the polynomical P(x) = (x - cos36^(@))(x - cos84^(@))(x - cos...

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  18. Consider the polynomical P(x) = (x - cos36^(@))(x - cos84^(@))(x - cos...

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  19. Two parallel chords are drawn on the same side of the centre of a circ...

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