Answer:
16.3
Step-by-step explanation:
I'm assuming side a is the hypotenuse.
Cosine rule is [tex]a=\sqrt{a^{2} +b^{2}-2ab*cosC }[/tex]
so [tex]\sqrt{10^{2}+8^{2} -2*10*8*cos130}[/tex] = 16.33542217
The attached picture is a diagram if you are confused
The labelling of the sides doesn't matter as long as the unknown side is c
