सिद्ध करें कि `(cos30^(@)+sin60^(@))/(1+sin30^(@)+cos60^(@))=cos30^(@)`

(log)_(sin30^(@)cos60^(@))=1

Show that : (i) (1-sin60^(@))/(cos60^(@))=(tan60^(@)-1)/(tan60^(@)+1) (ii) (cos30^(@)+sin60^(@))/(1+sin30^(@)+cos60^(@))=cos30^(@)

cos 60^(@) sin 30^(@) +cos 30^(@) sin 60^(@)=

"(1) "sin60^(@)cos30^(@)+sin30^(@)cos60^(@)

co60^(@)sin30^(@)+cos30^(@)sin60^(@) =___.

((cos30^(@)+sin60^(@))/(1+cos60^(@)+sin30^(@)))=(sqrt(3))/(2)

(tan60^@)/(sin60^@+cos30^@)

sin 30^@ + cos 60^@ =………

cos30^(@)sin60^(@)+cos60^(@)sin30^(@)= ……………………

Prove that : cos30^(@).cos60^(@)-sin30^(@).sin60^(@)=0