Recall the formula for the sine of the difference of two angles:
[tex]\sin (\alpha-\beta)=\sin (\alpha)\cos (\beta)-\sin (\beta)\cos (\alpha)[/tex]By comparing with the expression:
[tex]\sin (48)\cos (15)-\cos (48)\sin (15)[/tex]We can notice that it is the same as:
[tex]\sin (48-15)[/tex]Since 48-15=33, therefore:
[tex]undefined[/tex]