`sin 78^(@) - sin 18^(@) + cos 132^(@)`=

the value of sin78^(@)-sin18^(@)+cos132^(@) is

Find the value: sin 78^(@) - sin18^(@) + sin 30^(@) - sin42^(@)

A=sin78^(@)-sin18^(@)+cos132^(@) B=cos12^(@)+cos84^(@)+cos132^(@)+cos156^(@) and C=(sin 75^(@)+sin 15^(@))/(cos 75^(@)+cos 15^(@)) then arrange in the ascending order

If cos 18^(@) - sin 18^(@) = k sin 27^(@) , then k =

(sin 18^@)/( cos 72 ^@) = ?

Evaluate : (cos 75^(@))/ (sin 15^(@)) + (sin 12^(@))/ (cos 78^(@)) - (cos 18^(@))/ (sin 72^(@))

cos18 ^ (@) - sin18 ^ (@) =