" (i) "2sin(5 pi)/(12)sin(pi)/(12)=(1)/(2)

Prove that; 2(sin(5 pi))/(12)(sin pi)/(12)=(1)/(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=

Prove that; 2sin((5pi)/12)sin(pi/12)=1/2

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

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

Prove that 2sin((5 pi)/(12))cos((pi)/(12))=(2+sqrt(3))/(2)

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