To simplify this expression, we will first simplify each term separately before combining them.
(sin3a/sina) = sin2a(cos3a/cosa) = cos2a
Therefore, the expression can be simplified as:
sin2a - cos2a
To simplify this expression, we will first simplify each term separately before combining them.
(sin3a/sina) = sin2a
(cos3a/cosa) = cos2a
Therefore, the expression can be simplified as:
sin2a - cos2a