Using the formula, `sinA=sqrt((1-cos2A)/(2))`, find the value of `sin30^(@)`, it being given that `cos60^(@)=(1)/(2)`.

Using the formula cos A =sqrt((1+cos2A)/(2)) , find the value of cos30^(@) , it is given that cos60^(@)=(1)/(2) .

Using the formula cos A =sqrt((1+cos2A)/(2)) , find the value of cos30^(@) , it is given that cos60^(@)=(1)/(2) .

Using the formula cos 2theta = 2 cos^(2)theta - 1 , find the value of cos 30^(@) , it is being given that cos 60^(@) = 1/2

Using the formula, tan 2A = (2tanA)/(1-tan^2A) , find the value of tan 60^@ , it being given that tan 30^@ =1/sqrt3

Using the formula tanA = (sin 2 A)/(1 + cos 2 A),"find the values of " tan75^(@) " and " cot 22^(@) 30

If sinA-cosA=(sqrt(3)-1)/(2) , then the value of sin A . cos A is

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

find the value of sin60^(@)cos30^(@)+sin30^(@)cos60^(@)

Find the value of sin60^(@)cos30^(@)+cos60^(@)sin30^(@) .

Find the value of sin60^(@)cos30^(@)+cos60^(@)sin30^(@) .