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" 2.Sin bo coss "30^(@)+" coos bo sin "3...

" 2.Sin bo coss "30^(@)+" coos bo sin "30^(@)

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The valiue of sin60^(@) cos 30^(@) + sin 30^(@)cos 60^(@) is ______.

The valiue of sin60^(@) cos 30^(@) + sin 30^(@)cos 60^(@) is ______.

If a=sin30^(@) and b=sin30^(@), then

(sin ^ (2) 30 ^ (@) - cos ^ (2) 30 ^ (@)) / (sin ^ (2) 30 ^ (@) + cos ^ (2) 30 ^ (@)) =

What is the value of cos (30^@+x) cos (30^@-x)- sin (30^@+x) sin (30^@-x)

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

Evaluate |["sin" 60^(@), "cos"60^(@)], ["sin" 30^(@), "cos" 30^(@)]|

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