Home
Class 12
MATHS
" (iii) "cos120^(@)cos240^(@)-sin120^(@)...

" (iii) "cos120^(@)cos240^(@)-sin120^(@)sin240^(@)=1

Promotional Banner

Similar Questions

Explore conceptually related problems

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

Prove that cos120^@cos240^@-sin120^@sin240^@=1

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

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

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

cos120^(@)=cos(90^(@)+30^(@)) =-sin30^(@)=-(1)/(2)

sin 120^(@) cos 150^(@)- cos 240^(@) sin 330^(@) =

sin 120^(@) cos 150^(@)- cos 240^(@) sin 330^(@) =

Prove that, cos510^(@)cos330^(@)+sin390^(@)cos120^(@)=-1 .

sin 240^@ + sin 120^@ =