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if 13theta=pi,then show that cos3theta+c...

if `13theta=pi`,then show that `cos3theta+cos5theta+2costheta.cos9theta=0`

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If 13theta =pi " show that"cos 3 theta + cos 5 theta + 2 cos theta cos 9theta = 0

If 13theta=pi ,show that costhetacos2theta cos3theta cos4theta cos5theta cos6theta=2^-6

Prove that, If " "15 theta = pi, "show that," cos theta cos2 theta cos3theta cos 4theta cos5 theta cos6theta cos7theta =1/2^(7)

4costheta cos 2theta cos3theta - 2cos 4theta=1

If 13 theta =pi , " prove that " cos theta cos 2theta cos3 theta cos4theta cos5 theta cos6 theta =1/2^(6)

cos 4theta = cos 3theta - cos2theta

sin4theta cos 2theta = cos5theta sin theta

Solve that equation : costheta+cos3theta-2cos2theta=0

If cos theta - sin theta = sqrt2 sin theta , then show that cos theta+sin theta = sqrt2 cos theta .

(sin3theta+sin5theta+sin7theta+sin9theta)/(cos3theta+cos5theta+cos7theta+cos9theta) is equal

UNITED BOOK HOUSE-ANNUAL EXAMINATION QUESTION PAPERS 2016-EXERCISE
  1. Find the domain of the function f(x)=(x^(2)+3x+5)/(x^(2)-5x+4)

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  2. If f(x)=e^(px+q),then shoq that f(a).f(b).f(c)=f(a+b+c).e^(2q)

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  3. if 13theta=pi,then show that cos3theta+cos5theta+2costheta.cos9theta=0

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  4. Show that secalpha-tanalpha=cot(pi/4+alpha/2)

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  5. Find the square root of i

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  6. Find the (r+1)th term from the end in the expansion of (1-3x)^n.

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  7. Prove that by using the principle of mathematical induction for all n...

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  8. Let the sum of n, 2n, 3n terms of an A.P. be S1, S2 and S3 , respectiv...

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  9. Find the locus of the mid-point of the portion of the line x cosalpha+...

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  10. If the coordinates of a point lies on the ellipse 9x^2+16y^2=144 be (2...

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  11. If y=e^x/(1+x^2),determin dy/dx.

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  12. Evaluate :lim(xrarrpi/4)(1-tanx)/(x-pi/4)

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  13. can 7/2be the probability of an event? Explain.

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  14. Two variables x and y are related by y=10-3x.If the standard deviation...

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  15. For any three sets A,B and C prove that Acup(BcapC)=(AcupB)cap(AcupC)

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  16. Find the value of 16cos(pi/15).cos((2pi)/15).cos((4pi)/15).cos((8pi)/1...

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  17. Show that sin^3alpha+sin^3(120^@+alpha)+sin^3(240^@+alpha)=-3/4sin3alp...

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  18. Prove that by using the principle of mathematical induction for all n...

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  19. If the P^(th)and q^(th)terms of an A.Pare a and b respectively,then sh...

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  20. Find the probability of drawing 4 cards from a pack of 52 cards such t...

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