# Math Help - a + ib

1. ## a + ib

how do you express sin( a+ ib) in the standard form of a+ ib

2. Originally Posted by alexandrabel90
how do you express sin( a+ ib) in the standard form of a+ ib

$\sin{z} = \frac{1}{2i}(e^{iz} - e^{-iz})$.