Q. Calcular el ángulo de los siguientes númeios complejos a) \( 3+2 i \) b) \( \frac{5}{2}+\frac{3}{7} i \)

In \( \triangle \mathrm{GHI}, g=9.6 \) inches, \( m \angle \mathrm{I}=80^{\circ} \) and \( m \angle \mathrm{G}=15^{\circ} \). Find the length of \( h \), to the nearest 10th of an inch.

In \( \triangle X Y Z, x=410 \) inches, \( y=450 \) inches and \( z=210 \) inches. Find the measure of \( \angle X \) to the nearest degree.

In \( \triangle \mathrm{EFG}, f=400 \) inches, \( m \angle \mathrm{~F}=94^{\circ} \) and \( m \angle \mathrm{G}=33^{\circ} \). Find the length of \( g \), to the nearest 10th of an inch.

In \( \triangle \mathrm{NOP}, n=54 \) inches, \( o=97 \) inches and \( p=95 \) inches. Find the measure of \( \angle \mathrm{N} \) to the nearest degree.

In \( \triangle \mathrm{PQR}, p=4.7 \) inches, \( m \angle \mathrm{P}=76^{\circ} \) and \( m \angle \mathrm{Q}=57^{\circ} \). Find the length of \( q \), to the nearest 10th of an inch.