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Samllest positive angle satisfying the e...

Samllest positive angle satisfying the equation `cos^(2)x+cos^(2) 2x+cos^(2)3x=1`, is

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The correct Answer is:
`x=(2n+1)pi/4,n inI` or `x(2n+1)pi/2,n inI` or `x=npi+-pi/6,n inI`
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MOTION-TRIGONOMETRIC EQUATION-EXERCISE 3
  1. Solve : cottheta= tan8theta

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  2. The angles between 0^0 and 90^0 which Satisfy the equation sec^2theta ...

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  3. sin5theta+sin3theta+sin3theta=0

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  4. Samllest positive angle satisfying the equation cos^(2)x+cos^(2) 2x+co...

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  5. sin^2 n theta- sin^2 (n-1)theta= sin^2 theta where n is constant and n...

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  6. Solve tantheta+tan2theta+sqrt(3)tanthetatan2theta=sqrt(3)

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  7. Find all value of theta, between 0 & pi, which satisfy the equation;...

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  8. Solve for x the equatiion sqrt(13-18tanx)=6 tan x-3 where -2pi lt x lt...

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  9. Find all the solution of 4c a s^2xsinx-2sin^2x=3sinx

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  10. Solve the equation for 0lethetale2pi,(sin2theta+sqrt3cos2theta)^2-5=co...

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  11. Find the general solution of the equation,2 tanx.cot(x/2)+cotx.tan(x/2...

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  12. Find the principal solution of the trigonometric equation sqrt(cot3x +...

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  13. Solve the equation : 2sinx =3x^2 +2x+3

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  14. Solve the inequality sin2x gtsqrt(2)sin^2x+(2-sqrt(2))cos^2x

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  15. Find the general solution of the equation,tan^2(x+y)+cot^2(x+y)=1-2x-x...

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  16. solve the equation for x , 5^(1/2)+5^(1/2 + log5 sinx) = 15^(1/2 + log...

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  17. Determine the smallest positive value of x which satisfy the equation ...

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  18. Given that A ,\ B are positive acute angles and sqrt(3)\ s in2A=s i...

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  19. The set of values of alpha for which the equation "sin"^(4) x + "cos...

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  20. Match the following for number of solution in [0,2pi]

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