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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, f...

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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. If cos(A-B)=3/5 and tan A tan B=2, then (a) cos Acos B=1/5 (b) sin A ...

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  7. Factors of cos4theta-cos4varphi are- a.(costheta+cosvarphi) b. \ (cos...

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

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  9. If 2tan10^0+t a n 50^0=2x ,\ "tan"20^0+"tan"5060=2"y","\ "2"tan"10^0+"...

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  10. If (3-4sin^2 1)(3-4sin^2 3)(3-4sin^2 3^2)(3-4s in 62\ (3^(n-1)))=s in ...

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  11. "cosec" 10^(@) - sqrt(3) " sec" 10^(@) =

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

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

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  14. Find the value 2 sqrt 2 sin 10^0[(s e c5^0)/2+(cos40^0\ )/(sin5^0)-2si...

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  15. sin^6theta+cos^6theta\ \ for all theta

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  16. (log)(sqrt(5))[2(s intheta-costheta)+3]\ for\ a l l\ theta

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  17. Statement I: t a n5theta-t a n3theta-t a n2theta=t a n5thetat a n3thet...

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

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  19. Statement I: sec^2theta=(4x y)/((x+y)^2) is positive for all real valu...

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

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