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Solve sin^3thetacostheta-cos^3thetasinth...

Solve `sin^3thetacostheta-cos^3thetasintheta=1/4dot`

A

`n pi + pi/8`

B

`(npi)/2 + (3pi)/8`

C

`n pi + pi/4`

D

none

Text Solution

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The correct Answer is:
B
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ML KHANNA-TRIGONOMETRICAL EQUATIONS -PROBLEM SET (2) (MULTIPICE CHOICE QUESTIONS)
  1. Solve cot(x//2)-cosec (x//2)=cot x.

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  2. If cot theta - tan theta = sec theta, then theta=

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  3. Solve tan theta+tan 2 theta+sqrt(3) tan theta tan 2 theta = sqrt(3).

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  4. Solve sin^3thetacostheta-cos^3thetasintheta=1/4dot

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  5. In a right angled triangle the hypotenuse is 2sqrt(2) times the length...

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  6. In a triangle ABC ,angle A is greater than B.If the measures of angles...

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  7. The values of theta satisfying "sin" 7 theta = "sin" 4 theta -"sin" th...

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  8. If sin theta + sin 3 theta + sin 5theta = 0, 0 le theta le pi//2, then...

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  9. If sin 6 x= sin 4x - sin 2x , then x =

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  10. Solve cos theta+cos 7 theta+cos 3theta+cos 5 theta=0,

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  11. If sin 7 theta + sin 4 theta + sin theta = 0, 0 le theta le pi //2 th...

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  12. If "tan" (pi "cos" theta) = "cot"(pi "sin" theta), then the value(s) ...

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  13. Solve sec 4 theta- sec 2 theta=2.

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  14. If: tan theta + tan 2theta = tan 3theta, then: theta=

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  15. General solution of the equation 4 cot 2 theta = cot^(2) theta - tan...

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  16. If 3 tan ( theta -15^@) =- tan ( theta + 15^@) , then theta =

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  17. If tan 3 theta + tan theta =2 tan 2 theta, then theta is equal to (n i...

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  18. Solve sinx+siny=sin(x+y)a n d|x|+|y|=1

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  19. If (1 - tan x)/(1 + tan x) = tan y and x - y = pi/6 , then x, y are re...

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  20. If "sin" A = "sin"B, "cos"A = "cos"B, then the value of A im terms of ...

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