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(sin^(2)theta)/(1-cottheta)+(cos^(2)thet...

`(sin^(2)theta)/(1-cottheta)+(cos^(2)theta)/(1-tantheta)=1+u,"then" : u`

A

`sintheta*costheta`

B

`sectheta*csctheta`

C

`tantheta*cottheta`

D

none of these.

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The correct Answer is:
A
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MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS-MCQs
  1. If : (1+sintheta)/(1+costheta)+(1-sintheta)/(1-costheta)=2u.(csctheta-...

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  2. (costheta*csctheta-sintheta*sectheta)/(costheta+sintheta)

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  3. (sin^(2)theta)/(1-cottheta)+(cos^(2)theta)/(1-tantheta)=1+u,"then" : u

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  4. (sin^(3)theta+cos^(3)theta)/(sintheta+costheta)+(sin^(3)theta-cos^(3)t...

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  5. (csctheta-sintheta")(sectheta-costheta)(tantheta+cottheta)=

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  6. (sectheta+tantheta-1)(sectheta-tantheta+1)=

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  7. If : f(x)=sec^(2)x, lt br gt then : (1+tan A *tanB)^(2)+(tan A-tanB)^(...

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  8. If : (sintheta+csctheta)^(2)+(costheta+sectheta)^(2)=tan^(2)theta+cot^...

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  9. If : sin^(4)theta+cos^(4)theta+sin^(2)theta*cos^(2)theta=1-u^(2), "th...

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  10. If : (sintheta+costheta)(1-sintheta*costheta)=sin^(n)theta+cos^(n)thet...

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  11. If : sin^(6)theta+cos^(6)theta=1-3u^(2)+3u^(4), "then" : u =

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  12. If sin theta + sin^(2) theta=1 " then " cos^(2) theta+ cos^(4) theta...

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  13. if : p*cos theta=sqrt(p^(2)+q^(2)).sin theta, "then" : q * sin theta=

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  14. If : cos theta+sintheta=1, "then" : cos theta-sintheta

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  15. If : sin theta= sqrt3*costheta, "then" : 2(sin theta+costheta)-1=

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  16. If : cos theta-sintheta=sqrt2.sin theta, "then": costheta+sintheta=

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  17. If : sin^(2)theta+sin^(4)theta=1, "then": tan^(4)theta-tan^(2)theta=

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  18. If : sin^(2)theta+sin^(4)theta=1, "then": cot^(2)theta+cot^(4)theta=

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  19. If : sectheta+costheta=2 "then" : sec^(2)theta-sec^(4)theta=

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  20. If : tan theta+cot theta=2, "then" : tan^(2)theta-tan^(3)theta=

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