Answer:
2.2
Step-by-step explanation:
Use the cosine law (look at the picture).
We have:
[tex]a=a\\b=4\\c=3\\\gamma=32^o[/tex]
[tex]a^2=4^2+3^2-2(4)(3)\cos32^o[/tex]
[tex]\cos32^o\approx0.848[/tex] → look at the second picture
[tex]a^2=16+9-24(0.848)\\\\a^2=25-20.352\\\\a^2=4.648\to a=\sqrt{4.648}\\\\a\approx2.2[/tex]
