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(sin .(5pi)/(12)-sin.(pi)/(12))/(cos.(5p...

`(sin .(5pi)/(12)-sin.(pi)/(12))/(cos.(5pi)/(12)+cos .(pi)/(12) ) = (1)/(sqrt(3))`

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Prove that, (sin""(5pi)/(12)-cos""(5pi)/(12))/(cos""(5pi)/(12)+sin""(5pi)/(12))=(1)/(sqrt(3))

2sin((5 pi)/(12))(sin((pi)/(12)))=

(sin((5pi)/12)-cos((5pi)/12))/(cos((5pi)/12)+sin((5pi)/12))=

(cos pi) / (12) - (sin pi) / (12) = (1) / (sqrt (2))

Prove that (i) " 2sin " (5pi)/(12) " sin " (pi)/(12)=(1)/(2) (ii) " 2 cos " (5pi)/(12) " cos " .(pi)/(12)=(1)/(2) (iii) " 2 sin ".(5pi)/(12) " cos " (pi)/(2) = ((2+sqrt(3))/(2))

Prove that (i) " 2sin " (5pi)/(12) " sin " (pi)/(12)=(1)/(2) (ii) " 2 cos " (5pi)/(12) " cos " .(pi)/(12)=(1)/(2) (iii) " 2 sin ".(5pi)/(12) " cos " (pi)/(2) = ((2+sqrt(3))/(2))

"sin" pi/12 "sin" (5pi)/12=