Show that: t a n(60^0+theta)t a n(60^0-t...

Show that: `t a n(60^0+theta)t a n(60^0-theta)=(2cos2theta+1)/(2cos2theta-1)`

A

`(2 cos 2A +1)/(2 cos 2A-1)`

B

`(2 cos 2 A-1)/(2 cos 2 A+1)`

C

`(cos 2 A+21)/(cos 2 A -1)`

D

`( cos 2 A -1)/(cos 2 A + 21)`

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The correct Answer is:

A

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