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zysi [14]
3 years ago
12

How can I find angle C?

Mathematics
1 answer:
VikaD [51]3 years ago
7 0
Recall all interior angles in a triangle add up to 180°, therefore

\bf \stackrel{A}{x+40}~~+~~\stackrel{B}{2x-5}~~+~~\stackrel{C}{3x-17}~~=~~180
\\\\\\
6x+18=180\implies 6x=162\implies x=\cfrac{162}{6}
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