सिद्ध कीजिए कि `sin 60^(@)=2sin 30^(@)cos 30^(@)`

Verify that : sin60^(@)=2sin30^(@)cos30^(@)

Prove that : sin60^(@)=2sin30^(@)cos30^(@) .

Prove that : sin60^(@)=2sin30^(@)cos30^(@) .

Prove that : (i) sin 60^(@) = 2 sin 30^(@) cos 30^(@) (ii) 4(sin^(4) 30^(@) + cos^(4) 60^(@)) - 3(cos^(2)45 - sin^(2)90^(@)) = 2

Verify that : sin 60^@ = 2 sin 30^@ cos 30^@

sin60^(@).cos30^(@)+cos30^(@)*sin60^(@)

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

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

sin 30^@ + cos 60^@ =………

(cos 60^(@) xx cos 30^(@)+sin 60^(@)xx sin 30^(@))/(2 sin 30^(@) xx cos 0^(@)+ sin 90^(@))=?