Answer:
Step-by-step explanation:
First you have to calculate CB in order to use sin law to calculate β A
CB=[tex]\sqrt{18.4^{2} -13.2^{2} }[/tex]
CB=12.8(correct to nearest tenth)
After that, use sin law to calculate β A,
[tex]\frac{18.4}{sin90} =\frac{12.8}{sinA}[/tex] Β Β Β or Β Β [tex]\frac{sin90}{18.4} =\frac{sinA}{12.8}[/tex]
sinA=0.695...
A=44.079...
Β =44.1(corrext to the nearest tenth)
Is that clear enough for you?
