Question

Help!!
Solve the triangle,if possible.round to the nearest hundredth
a=28ft
b=31ft
c=45ft

Answer 1

Use the law of cosines.

Answer 2

give me more hint please

Answer 3

\[c^2=a^2+b^2-2ab \cos C\]

Answer 4

i got lost :/

Answer 5

39,060 ft.

Answer 6

more hint

Answer 7

\[45^2=28^2+31^2-2(28)(31)\cos C\]
\[2025=784+961-2(28)(31)\cos C\]
\[\frac{2025-784-961}{-1736}=\cos C\]

Answer 8

Look up the law of cosines

Answer 9

Find C
Then repeat the process to find B

Answer 10

Nevermind