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

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

A

2

B

`-1`

C

`1`

D

0

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 )
  1. (cos 15^(@) + sin 15^(@))/(cos 15^(@) - sin 15^(@)) =

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

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

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  5. ((1+ tan 32^@)(1+tan 13^(@)))/((1+tan23^(@))(1+tan22^(@)))=

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  6. The value of (tan 80^@ - tan 10^(@))/( tan 70^(@))

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  7. (tan alpha + tan beta )/( tan (alpha + beta ))+(tan alpha - tan beta )...

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  8. If sin ( theta + alpha ) = cos ( theta + alpha ), then tan theta =

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  9. If tan(A+B)=m , tan (A-B)=n, " then " tan 2A=

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  10. If tan (A+B)=p , tan (A-B)=q , " then " cot 2B=

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  11. If tan theta1= k cot theta2 " then " (cos (theta1- theta2))/(cos(thet...

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  12. If tan A =18//17 , tan B=1//35 then tan (A-B)=

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  13. If tan(pi//4 + theta ) + tan (pi//4 - theta ) =3 , " then " tan^(2)(p...

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  14. If tan""[(pi)/4 + theta ]+tan[(pi)/(4)- theta ]=a " then " tan^(3)[(pi...

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  15. If cos alpha + cos beta =0 = sin alpha + sin beta " then " cos (alpha...

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  16. If tan theta =(cos 12^@ + sin 12^(@))/(cos 12^(@)-sin12^(@)) " then "...

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  17. If tan 20^@ =p , " then " (tan 160^@ - tan 110^(@))/(1+ tan 160^(@) ta...

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  18. If 0 lt theta lt pi//2 and 2 sin theta = sqrt(3) cos 10^(@) + sin 10^(...

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  19. If A+B=pi//2 then tan B+ 2 tan (A-B)=

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  20. If A+B=135^(@) " then " (1+ cot A ) (1+cot B)=

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