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

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

Convert each of the following products into the sum or difference of sines and cosines (i). 2sin5xcosx(ii). 2cos4xcos3x(iii). 2sin3xsinx(iv). sin((5pi)/12).cos(pi/12)(v). cos((5pi)/12)cos(pi/12)

Find the value of 2cos((5 pi)/(12))cos((pi)/(12)) and 2sin((5 pi)/(12))cos((pi)/(12))

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

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

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

Find the value of cos""(pi)/(12)(sin""(5pi)/(12)+cos""(pi)/(4))+sin""(pi)/(12)(cos""(5pi)/(12)-sin""(pi)/(4)) .

Find the value of cos""(pi)/(12)(sin""(5pi)/(12)+cos""(pi)/(4))+sin""(pi)/(12)(cos""(5pi)/(12)-sin""(pi)/(4)) .