" a sin "(5 pi)/(12)cos(pi)/(12)-(sqrt(0)+2)/(2)

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

Prove that 2"sin"(5pi)/(12)"cos"(pi)/(12)=(sqrt3+2)/2

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

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

Prove that 2sin((5pi)/12)cos(pi/12)=(2+sqrt3)/2

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

Prove that: 15sin(5pi)/(12)+15cos(5pi)/(12)-20sin^3(5pi)/(12)-20cos(5pi)/(12)=0

Evaluate the following: (sin(7 pi))/(12)(cos pi)/(4)-(cos(7 pi))/(12)(sin pi)/(4)