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" (v) "sin(-30^(@))...

" (v) "sin(-30^(@))

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

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

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

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

sin 10^(@) sin 30^(@) sin 50^(@) sin 70^(@) sin 90^(@)=

sin10 ^ (@) + sin20 ^ (@) + sin30 ^ (@) + ......... + sin360 ^ (@) =

Find the value of cos 30^(@) + sin 30^(@)

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

What is the value of (sin30^(@)+cos30^(@))/(cos30^(@)-sin30^(@)) ?

What will be the value of 3sin30^(@)-4sin^(3)30^(@) ?