4sin^(3)75^(@)-3cos15^(@)=

4sin^(3)75^(0)-3cos15^(0)= (1)/(2) (1)/(sqrt(2)) (1)/(sqrt(3)) sqrt(3)

4cos^(3)15^(@)-3cos15^(@)=

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

4sin75^@-3cos15^@=

Express each of the following products into sum and difference of sines and cosines ( i ) 2cos3 theta sin2 theta( ii) 2sin5 theta cos3 theta( iii) cos9 theta cos4 theta(iv)sin75^(@)cos15^(@)

(cos 75^(@)+cos15^(@))/(sin75^(@)-sin 15^(@))=sqrt(3)

(cos 75^(@)+cos15^(@))/(sin75^(@)-sin 15^(@))=sqrt(3)

Evaluate det[[cos15^(@),sin15^(@)sin75^(@),cos75^(@)]]

Prove that sin 75^(@) - sin 15^(@) = cos 105^(@) + cos 15^(@)

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