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Prove that: t a nalpha+2tan2alpha+4tan4a...

Prove that: `t a nalpha+2tan2alpha+4tan4alpha+8cot8alpha=cotalpha`

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
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  2. If sinx+cosx=sqrt(y+1/y) for x in [0,pi] , then

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  3. Prove that: t a nalpha+2tan2alpha+4tan4alpha+8cot8alpha=cotalpha

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  4. sintheta+sqrt(3)costheta=6x-x^2-11 ,0lt=thetalt=4pi,x in R , (a) hold...

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  5. If the angles of a triangle are in the ratio 4:1:1, then the ratio of ...

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  7. If f(theta)=(1-sin2theta+cos2theta)/(2cos2theta) , then value of 8f(1...

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  8. In triangle A B C ,2a csin(1/2(A-B+C)) is equal to

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  9. tan100^0+tan125^0+tan100^0tan125^0 is equal to

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  10. The solution set of the system of equations x+y=(2pi)/3,cosx+cosy=3/2,...

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  11. The positive integer value of n >3 satisfying the equation 1/(sin(pi/n...

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  12. IF the lengths of the side of triangle are 3,5 and 7, then the largest...

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  13. For x in (0, pi) the equation sin x+2 sin 2x-sin 3x=3 has

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  14. Match list-I with list-II and select the correct answer using the code...

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  15. In a triangle ABC, angleB = pi/3 and angleC= pi/4. Let D divide side B...

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  16. If costheta1 =2costheta2, then tan((theta1-theta2)/2)tan((theta1+theta...

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  17. If (cos e c^2theta-4)x^2+(cottheta+sqrt(3))x+cos^2(3pi)/2=0 holds true...

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