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If "cosec"^(2) theta = (4xy)/((x+y)^(2))...

If `"cosec"^(2) theta = (4xy)/((x+y)^(2))`, then

A

x=y

B

x=-y

C

y=1/x

D

none

Text Solution

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC RATIOS AND IDENTITIES -EXERCISE 1 A ( TRIGONOMETRIC FUNCTIONS)
  1. If sec theta =a+(1)/(4a) " then " sec theta + tan theta =

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  2. If "cosec " theta =p+(1)/(4p) , " then cosec " theta + cot theta =

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  3. If "cosec"^(2) theta = (4xy)/((x+y)^(2)), then

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  4. If a sin x = b cos x =(2c tan x )/(1- tan^(2) x) " then " ((a^(2)-b^(...

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  5. If (2 sin theta )/(1+ cos theta + sin theta )=x, find the value of (1...

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  6. sqrt(1-sin^(2)100^(@))*sec 100^(@)=

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  7. sqrt((1+sinA)/(1-sin A ))=

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  8. If sqrt((1+ cos theta )/(1- cos theta ))="cosec " theta + cot theta " ...

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  9. If x=a cos^(3) theta , y= a sin^(3) theta then

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  10. If x= a cos^(4) theta, y=bsin^(4) theta , then sqrt(x//a) + sqrt(y//...

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  11. If x cos theta + y sin theta = a , x sin theta - y cos theta = b the...

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  12. If sin theta + cos theta = m and sec theta + " cosec " theta = n the...

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  13. If (x)/(a) cos theta + (y)/(b) sin theta = 1 , (x)/(a) sin theta - (y...

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  14. If x=a("cosec" theta + cot theta ) , y=b( " cosec " theta - cot theta ...

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  15. If x sec theta + y tan theta = a, x tan theta + y sec theta = b " the...

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  16. By eleminating theta from the equation a1 "cosec " theta + b1 cot th...

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  17. If x= a ( sec theta + tan theta )^2 , y=b(sec theta - tan theta )^2 "...

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  18. If tan theta + sin theta = m, tan theta - sin theta = n " then " (m^(...

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  19. If x= cot theta + cos theta , y= cot theta - cos theta , " then " (x^...

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  20. If cot theta + tan theta = m , sec theta - cos theta = n " then " (m^...

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