Răspuns:
a)<A=38*
<B=87*
C=?
C=180*-(38*+87*)=180*-125*
C=55*
c)<D=30*
<K=30
<L=?
<L=180*-(30*+30*)=180*-60*
<L=120*
b)<D=35*43'
<E=100*
<A=?
<A=180*-(35*43'+100*)=180-135*43'
<A=144*17'
d)<M=35*20'
<N=70*15'
<P=?
<P=180*-(35*20'+70*15')=180*-105*35'
<P=74*25'
e)<R=45*12'
<T=65*36'
<S=?
<S=180*-(45*12'-65*36')=180*-110*48'
<S=69*12'
Explicație pas cu pas:
< = unghi
* = grade
Sper ca te-am ajutat, pot primii coroana?