0^(@) lt theta lt 90^(@) के लिए अगर (se...

`0^(@) lt theta lt 90^(@)` के लिए अगर `(sec theta(1-sin theta) (sec theta + tan theta))/((sec theta - tan theta)) = (1+k)/(1-k)` है, तो k बराबर है :

A

A)`cosec theta`

B

B)`cos theta`

C

C)`sec theta`

D

D)`sintheta`

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The correct Answer is:

D

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