Answer:
a= 10.23, C= 26.3, B= 103.7
Step-by-step explanation:
a²=b²+c²-2bc*cos A
==>a²=13²+6²-2*13*6*cos 50°=104.7251...
==>a=10.2335...
sin C/c=sin A/a
==>sin C=qin 50°-6/10.2335...=0.449137...
==>angle C=26.688394...°
angle B==180°-50°-26.688394...°=103.311610...°
