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prove that In an acute angled triangle A...

prove that In an acute angled triangle ABC, `secA+ secB+secCge6` is

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PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
  1. If S=cos^2(pi/n) + cos^2((2pi)/n) +....+ cos^2((n-1)pi)/n, then S equa...

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  2. If cos5theta = acostheta +bcos^2theta + c.cos^5theta =d, then

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  3. prove that In an acute angled triangle ABC, secA+ secB+secCge6 is

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  4. If Tn=sin^ntheta+ cos^ntheta, then (T6-T4)/T6=m holds for value of m s...

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  5. Value of the expression 2sinx-cos2x is

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  6. The range of function tan(pi/4sin^2x) must be

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  7. The inequation 4sin3x+5ge4cos2x+5sinx

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  8. If 7cosx-24sinx=dcos(x+alpha), oltalphaltpi/2, be true for all x in R,...

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  9. Prove that abs(sinthetasin(60^@-theta)sin(60^@+theta)) le1/4 for all v...

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  10. In a Delta ABC

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  11. In a triangle tanA+tanB+tanC=6 and tanAtanB=2, then the values of tanA...

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  12. 0ltthetaltpi/2, if x=sum(n=0)^inftycos^(2n)theta,y=sum(n=0)^inftysin^(...

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  13. If tanalpha and tanbeta are the roots of the equation x^2+px+q=0 (pne0...

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  14. Let f(theta, alpha)= 2sin^2theta+4cos(theta+alpha)sintheta.sinalpha+co...

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  15. Let f(theta, alpha)= 2sin^2theta+4cos(theta+alpha)sintheta.sinalpha+co...

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  16. Let f(theta) = sqrt(a^2cos^2theta+b^2sin^2theta) + sqrt(a^2sin^2theta+...

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  17. Let f(theta) = sqrt(a^2cos^2theta+b^2sin^2theta) + sqrt(a^2sin^2theta+...

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  18. If cos(pi/7), cos((3pi)/7), cos((5pi)/7) are the roots of the equation...

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  19. If cos(pi/7), cos((3pi)/7), cos((5pi)/7) are the roots of the equation...

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  20. Match List - I with List-II

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