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Prove tanx+ tany+ tanz=tan xtany tanz i...

Prove `tanx+ tany+ tanz=tan xtany tanz ` if x+y+z = `pi`

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VMC MODULES ENGLISH-TRIGONOMETRIC IDENTITIES AND EQUATIONS -LEVEL -2
  1. (sin^3theta-cos^3theta)/(sintheta-costheta)-(costheta)/(sqrt(1+cot^2th...

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  2. In interval [-(pi)/(2),(pi)/(2)], the equation log(sin theta )( cos^(...

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  3. Prove tanx+ tany+ tanz=tan xtany tanz if x+y+z = pi

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  4. If F(x) = sinx+cosx, then the most general solution of F(x) = [F((pi)/...

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  5. If max {5 sin theta + 3 sin ( theta - alpha )}=7 , then the set of pos...

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  6. Find the number of integral value of n so that sinx(sinx+cosx)=n has a...

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  7. The value sum(r=0)^(7)tan^(2)""(pix)/(16) is equal to :

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  8. One of the equation cosx-x+1/2=0 lies in the interval (0,pi/2) (b) (-...

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  9. If ("tan"(theta+alpha))/a=""("tan"(theta+beta))/b=""("tan"(theta+gamma...

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  10. If t a nalpha=1/(sqrt(x(x^2+x+1))),tanbeta=(sqrt(x))/(sqrt(x^2+x+1))a ...

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  11. If n=pi/(4alpha), then tan alpha tan 2alpha tan 3 alpha ... tan(2n-1)a...

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  12. If cos(alpha+beta)sin(gamma+delta)="cos"(alpha-beta)"sin"(gamma-delta)...

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  13. Let A and B denote the statements A : cos alpha + cos beta + cos gam...

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  14. If alpha, beta, gamma, delta satisfy the equation tan(x+(pi)/(4))=3 ta...

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  15. in any triangle ABC, which is not right angled Sigma cosA.cosecB.cosec...

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  16. If P(n) = cos^(n)theta +sin^(n)theta, then P(2) - P(1) is equal to :

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  17. If tan^(2)x+secx -a = 0 has atleast one solution, then complete set of...

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  18. 1/2tan(alpha/2)+1/4tan(alpha/4)+1/8tan(alpha/8)....1/2^ntan(alpha/2^n)...

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  19. Suppose sin^3xsin3x=sum(m=0)^n Cmcosm x is an identity in x , where ...

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  20. Find the ratio of greatest value of 2-cos x+ sin^(2)x to its least val...

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