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38,quad cos(60^(@)+theta)-sin(30^(@)-the...

38,quad cos(60^(@)+theta)-sin(30^(@)-theta)

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Solve cos(50^(@)+ theta) = sin (30^(@)+theta) .

Prove that 4 cos theta cos (60^(@) + theta) cos (60^(@) - theta) = cos 3theta .

Prove that: sin(60^(@)-theta)cos(30^(@)+theta)+cos(60^(0)-theta)sin(30^(@)+theta)=1

If 4 sin(60^(@) + theta ) sin (60^(@) - theta )-1=k cos 2 theta , the value of k is

sin (60^(@) + theta) - sin ( 60^(@) - theta ) = sin theta.

cos theta - cos (60^(@) + theta ) - cos(60^(@) - theta )=

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Evaluate sin(30^(@)+theta)-cos(60^(@)-theta) .

Prove that sin theta sin(60^(@)-theta) sin(60^(@)+theta)=1/4 sin3theta .

Prove that sin theta sin(60^(@)-theta) sin(60^(@)+theta)=1/4 sin3theta .