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Solve the following equations and write ...

Solve the following equations and write general solutions
`4 cos theta. Cos 2 theta.cos 3 theta = 1` in `(0, pi)`

Text Solution

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The correct Answer is:
`{(pi)/(8),(pi)/(3),(3pi)/(8),(5pi)/(8),(2pi)/(3),(7pi)/(8)}`
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AAKASH SERIES-TRIGONOMETRIC EQUATIONS-Exercise - 6.1 Short Answer Questions
  1. If cos 3x + cos 2x = sin (3x//2)+sin(x//2), 0 le x le 2pi, then x =

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  2. Solve the following equations and write general solutions sec x cos...

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  3. Solve the following equations and write general solutions 4 cos the...

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  4. Solve the following equations and write general solutions 4 sin the...

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  5. Solve sin x + sqrt(3) cos x = sqrt(2).

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  6. Solve sqrt(2)(sinx+cosx)=sqrt(3)

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  7. Solve the following equations tan theta + sec theta = sqrt(3) in [0...

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  8. Solve the following equations sqrt(3) Sin theta - Cos theta = sqrt(...

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  9. Solve the following equations Cot x + "Cosec x" = sqrt(3)

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  10. If theta(1), theta(2) are solutions of the equation a cos 2theta + bsi...

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  11. If alpha, beta are solutions of a cos theta + b sin theta = c where a,...

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  12. If alpha, beta are solutions of a cos theta + b sin theta = c where a,...

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  13. If alpha, beta are solutions of a cos theta + b sin theta = c where a,...

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  14. If alpha, beta are solutions of a cos theta + b sin theta = c where a,...

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  15. Find all values of x in (-pi,pi) satisfying the equation 8^(1+cosx+cos...

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  16. If x+y=(2pi)/(3)andsinx+siny=(3)/(2)" then find"x ,y

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  17. If tan(picostheta)=cot(pisintheta), then prove that cos(theta-(pi)/(4...

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  18. Solve sin x + sin 2x + sin 3 x = cos x + cos 2x + cos 3x

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  19. Solve sin 3x + sin x + 2 cos x = sin 2x + 2 cos^(2)x

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  20. Solve the following equations Cos 2 theta + cos 8 theta = Cos 5 the...

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