Find the value of `(((4cos^(2)9^(circ)-3)(4sin^(2)63^(circ)-3))/(sin9^(circ))).`

Find the value of sin(1/4cos^(-1)((-1)/9))

Find the value of sin(1/4)cos^(-1)((-1)/9)

Find the value of sin(105^circ)

Find the value of : sin{cos("cos"^(-1)(3pi)/4)}

Find the value of ((cos1^(@)+sin1^(@))(cos2^(@)+sin2^(@))(cos3^(@)+sin3^(@))...(cos 45^@sin45^@))/( cos1^(@)cos2^(@)cos3^(@)...cos45^(@))

Value of sin(37^circ)cos(53^circ) is

The value of : (cos9^@+sin9^@)/(cos9^@-sin9^@) is:

Find the maximum value of 4sin^2x+3cos^2x+sin(x/2)+cos(x/2)dot

Using the identity sin^(4) x=3/8-1/2 cos 2x+1/8 cos 4x or otherwise, if the value of sin^(4)(pi/7)+sin^(4)((3pi)/(7))+sin^(4)((5pi)/(7))=a/b , where a and b are coprime, find the value of (a-b) .

Find the maximum value of 4sin^2x+3cos^2x+sinx/2+cosx/2dot