<Ul> <Li> Division: </Li> </Ul> <Dl> <Dd> <Dl> <Dd> r 0 e i φ 0 r 1 e i φ 1 = r 0 r 1 e i (φ 0 − φ 1) (\ displaystyle (\ frac (r_ (0) e ^ (i \ varphi _ (0))) (r_ (1) e ^ (i \ varphi _ (1)))) = (\ frac (r_ (0)) (r_ (1))) e ^ (i (\ varphi _ (0) - \ varphi _ (1)))) </Dd> </Dl> </Dd> </Dl> <Dd> <Dl> <Dd> r 0 e i φ 0 r 1 e i φ 1 = r 0 r 1 e i (φ 0 − φ 1) (\ displaystyle (\ frac (r_ (0) e ^ (i \ varphi _ (0))) (r_ (1) e ^ (i \ varphi _ (1)))) = (\ frac (r_ (0)) (r_ (1))) e ^ (i (\ varphi _ (0) - \ varphi _ (1)))) </Dd> </Dl> </Dd> <Dl> <Dd> r 0 e i φ 0 r 1 e i φ 1 = r 0 r 1 e i (φ 0 − φ 1) (\ displaystyle (\ frac (r_ (0) e ^ (i \ varphi _ (0))) (r_ (1) e ^ (i \ varphi _ (1)))) = (\ frac (r_ (0)) (r_ (1))) e ^ (i (\ varphi _ (0) - \ varphi _ (1)))) </Dd> </Dl>

When are polar coordinates used in real life