Question

Use the Law of Sines to find the missing angle of the triangle. Find measure of angle b given that c=83 , a=44 and that measure of angle a =31 . A=76.3 degrees B= 15.8 degrees C= 72.7 degrees

Answer 1

Substitute these values in the Law of Sines and you will get your answer

Answer 2

don't really understand laws of sines or anything that's why I posted it to get help

Answer 3

visit and watch this video
http://www.youtube.com/watch?v=5WJKmirJWjA

Answer 4

you say that the measure of angle a is 31, but you also say that A = 76.3 degrees

Answer 5

which one is it?

Answer 6

the capital a is the choice a b or c sorry

Answer 7

can you post a screenshot of the whole problem?

Answer 8

there are too many a's, b's and c's...lol

Answer 9

here are the choice s
A=76.3 degrees B= 15.8 degrees C= 72.7 degrees

heres the question its confusing and I cant do screen shots sorry

Use the Law of Sines to find the missing angle of the triangle. Find measure of angle b given that c=83 , a=44 and that measure of angle a =31

Answer 10

ok so let me get this straight...choice A is 76.3, choice B is 15.8 and choice C is 72.7 right?

Answer 11

yes

Answer 12

ok great

Answer 13

the law of sines is

sin(A)/a = sin(C)/c

plug in the given info to get

sin(31)/44 = sin(C)/83

now solve for angle C

sin(31)/44 = sin(C)/83

83*sin(31)/44 = sin(C)

0.97154909585 = sin(C) ... use a calculator here

sin(C) = 0.97154909585

C = arcsin(0.97154909585)

C = 76.2999941 ... use a calculator here

C = 76.3

Now use this to find angle B

A+B+C = 180

31 + B + 76.3 = 180

B + 107.3 = 180

B = 180 - 107.3

B = 72.7

So angle B is 72.7 degrees

Answer 14

okay thank you for the help everyone

Answer 15

which is choice C

again...too many A's, B's and C's

Answer 16

thank you for your help though thanks a lot

Answer 17

you're welcome