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If `sintheta+sqrt(sintheta+sqrt(sintheta+sqrt(sintheta+...+oo)))=sec^4alpha,` then `sintheta` is equal to- a.`sec^2alphatan^2\ alpha` b. `2((1-cos2alpha))/((1+cos2alpha))` c. `2((1+cos2alpha))/((1-cos2alpha))\ ` d. `cot^2alphacos e c^2alpha`

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ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
  1. Q. Let n be an add integer if sin ntheta-sum(r=0)^n(br)sin^rtheta, for...

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  2. For a positive integer n , let fn(theta)=(tantheta//2)(1+sectheta)(1+s...

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  3. If sintheta+sqrt(sintheta+sqrt(sintheta+sqrt(sintheta+...+oo)))=sec^4a...

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  4. Comprehension 1 Let a^((log)b x)=c\ w h e r e\ a ,\ b ,\ c\ &\ x...

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  5. If tan\ theta/2=cosectheta-sintheta, then- a.sin^2\ theta/2=2sin^2\ 18...

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  6. Factors of cos4theta-cos4varphi are- a.(costheta+cosvarphi) b. \ (cost...

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  7. For the equation sin3theta+cos3theta=1-sin2theta (A) tantheta = 1 is...

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  8. cosec10^@-sqrt3 sec 10^@=

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  9. 4\ cos\ 20^0\ -sqrt(3)\ cot\ 20^0\ =

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  10. (2cos 40^0-cos 20^0)/(sin 20^0)=

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  11. Statement 1 is True: Statement 2 is True; Statement 2 is a correct ...

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  12. Statement 1 is True: Statement 2 is True; Statement 2 is a correct ...

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  13. Statement 1 is True: Statement 2 is True; Statement 2 is a correct ...

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  14. The value of cos(2pi)/7cos(4pi)/7cos6/7pi is a.-1//2 b. \ 1//2 c.\ 1//...

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  15. If alpha=pi/(15),\ then the value of prod(r=1)^7cos ralpha is- a.1/(1...

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  16. Prove that: s inpi/(14)s in(3pi)/(14)s in(5pi)/(14)s in(7pi)/(14)s in(...

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  17. Which of the following is correct? (A) sin1^@>sin1 (B) sin1^@<sin1 (C)...

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  18. Find the degrees and radians the angle between the hour hand and the ...

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  19. One angle of a triangle is (4x)/3 grades and another is 3x degrees, wh...

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  20. If cos(y-z)+cos(z-x)+cos(x-y)=-3/2, prove that cos x + cos y + cos z =...

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