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

Prove that: (cos30^(@)+sin60^(0))/(1+cos60^(@)+sin30^(@))=(sqrt(3))/(2)

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

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

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

Find the value of cos60^(@) cos 30^(@)-sin 60^(@) sin 30^(@)

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

Evaluate : cos60^(@)cos30^(@)+ sin 60^(@)sin30^(@)

Verify each of the following : (i) sin60^(@)cos30^(@)-cos60^(@)sin30^(@)=sin30^(@) (ii) cos60^(@)cos30^(@)+sin60^(@)sin30^(@)=cos30^(@) (iii) 2sin 30^(@)cos30^(@)=sin60^(@) (iv) 2sin45^(@)cos45^(@)=sin90^(@)

Is it right to say that cos ( 60^(@) + 30 ^(@) ) = cos 60^(@) cos 30 ^(@) -sin 60^(@) sin 30 ^(@)

Is it right to say that cos ( 60^(@) + 30 ^(@) ) = cos 60^(@) cos 30 ^(@) -sin 60^(@) sin 30 ^(@)