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The value of ( sin theta )/( sin^(2) (pi...

The value of `( sin theta )/( sin^(2) (pi//8 + theta //2)-sin^(2)(pi//8- theta //2))=`

A

2

B

`1//2`

C

`sqrt(2)`

D

none

Text Solution

Verified by Experts

The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC RATIOS AND IDENTITIES -EXERCISE 1 B ( COMPOUNDS ANGLES )
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  2. cos^(2)(""(pi)/(6) + theta ) -sin^(2)""((pi)/(6) - theta ) =

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  8. Find tan 20^(@) + tan40^(@) + sqrt(3)tan20^(@)tan40^(@).

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  11. If tan 69^(@) + tan 66^@ - tan 69^(@) tan66^@=2k , then the value of ...

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  14. cos^(2) (A-B)+cos^(2)B-2cos(A-B) cos A cos B =

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  17. (tan (45^(@) + alpha ) + tan ( 45^(@) - alpha ))/( cot (45^(@) + alpha...

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  18. (tan 23^(@) + tan 22^(@))/(1- tan23^(@) * tan 22^(@))=

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  19. If (1- tan2^(@) cot 62^(@))/( tan 152^(@) - cot88^(@))=ksqrt(3) , then...

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