" 9."sin150^(@)cos320^(@)+cos330^(@)Mn650^(@)+1=0

sin150^(@).cos120^(@)+cos330^(@)*sin660^(@)=-1

sin120^(@)cos150^(@)-cos240^(@)sin330^(@)

sin120^(@)cos150^(@)-cos240^(@)sin330^(@)=

The value of sin600^(@)cos330^(@)+cos120^(@)sin150^(@) is

The value of sin 600^(@) cos 330^(@)+ cos 120^(@) sin 150^(@) is

The value of sin 600^(@) cos 330^(@)+ cos 120^(@) sin 150^(@) is ............... A) -1 B) 1 C) (1)/(sqrt2) D) (sqrt3)/(2)

Prove that: sin420^(@)cos390^(@)+cos(-300^(@))sin(-330^(@))=1

cos510^(@)cos330^(@)+sin390^(@)cos120^(@)

Find the value of sin330^(@)cos120^(@)+cos210^(@)sin300^(@)