Question

Solve the triangle.
B = 72°, b = 12, c = 8
Im trying to solve this using law of sines but when I put the information into the formula I'm not getting the correct answer ):

Answer 1

I get 8/sin72=12/sinx
which gives me 8sin72/12=sinx
But when I solve for X it doesnt match my answer choices

Answer 2

PLEASE HELP

Answer 3

@phi

Answer 4

@FriedRice

Answer 5

well you have a triangle here ill draw it out for yo

Answer 6

Is that wrong?

Answer 7

yeah your right but because your looking for side a

Answer 8

Why am I looking for side A?
I was trying to solve for angle C with the law of sines

Answer 9

Im so confused

Answer 10

arent you looking for the sides. because the question is asking to solve the triangle

Answer 11

I have to find both angles and then side a

Answer 12

Cannot be solved

C = 39.3°, A = 68.7°, a ≈ 16.5

C = 39.3°, A = 68.7°, a ≈ 11.8

C = 44.5°, A = 63.7°, a ≈ 11.8

Answer 13

those are my answer choices

Answer 14

ok

Answer 15

first use Pythagorean theorem to find the side of A

Answer 16

okay!

Answer 17

I got 14.4

Answer 18

hmmm

Answer 19

ok \[\sin 72^{o} = 12 / x\]

Answer 20

that will help you find side a then