Question

Use the Law of Cosines and find side b.

Is it 15.38?

Answer 1

a = 29, c = 39, and theta is 20 degs

Answer 2

is this a right triangle?

Answer 3

No

Answer 4

nvm was thinking something else...let me check

Answer 5

just substitute and calculate the value...

Answer 6

you mean c^2=

Answer 7

I used the formula...my answer is in the question

Answer 8

oops

\[b^2 = a^2 + c^2 - 2ac \cos(\theta)\]

Answer 9

so then you have

\[b^2 = 29^2 + 39^2 - 2 \times 29 \times 39 \times \cos(20)\]

Answer 10

or you can just google a triangle solver, put in what you know and check your answer that way

Answer 11

I also got 15.38