32sin^(6)15^(@)-48sin^(4)15^(@)+18sin^(2)15^(@)

sin^(2) 75^(@) - sin^(2)15^(@)=

32sin^(6) 15^@ -48 sin^(4) 15 ^(@) + 18 sin^2 15^@ =

What is the value of 2sin15^(@) cos 15^(@)-4sin^(3)15^(@)cos15^(@) ?

The value of (cos ^(6)5^(@)-15 cos ^(4) 5^(@) sin ^(2)5^(@)+15 cos ^(2)5^(@)sin ^(4) 5^(@)-sin ^(6)5^(@)) is equal to-

The value of (cos 15^(@) - sin 15^(@))/(cos 15^(@) + sin 15^(@) is

Which of the following number(s) is/are rational? (A) sin15^(@) (B) cos15^(@) (C) sin15^(@)cos15^(@)(D)sin15^(@)cos75^(@)

sin 15^(@)=

Which of the following number (s) is/are rational number? (A) sin15^(@) (B) cos15^(@) (C) sin15^(@)cos15^(@)(D)sin15^(@)cos75^(@)

sin75^(@)-sin15^(@)=cos105^(@)+cos15^(@)