HELP ASAP!!!! ANYONE!!!!!! WILL FAN AND MEDAL!!!
Use the law of sines to find the missing angle of the triangle (drawing is shown below):
A. 110.0
B. 153.9
C. 26.1
D. 70.0

- Nerdgirl

- katieb

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- Nerdgirl

|dw:1433426172396:dw|

- Nerdgirl

@Johnica @Australopithecus

- Nerdgirl

ANYONE!!

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## More answers

- Nerdgirl

@Australopithecus can you help?

- Nerdgirl

@vjohnny

- Nerdgirl

Nobody wants to help me? :(

- Nerdgirl

@darkb0nebeauty

- anonymous

You want to find the missing angle but there are 2 missing angles, which one do you want?

- anonymous

i would say C or D because it wouldnt be alot high

- Nerdgirl

oh sorry I need to find the measure of angle b

- anonymous

|dw:1433427360957:dw|

- anonymous

ok

- Nerdgirl

angle b

- Australopithecus

Well if you find one you know the other one

- anonymous

according to law of sines the ratio of the single of an angle to the side opposite to the angle is equal for all pairs
\[\frac{\sin(C)}{AB}=\frac{\sin(A)}{BC}=\frac{\sin(B)}{AC}\]

- anonymous

that 40 is angle A or is the side length?

- Nerdgirl

angle a

- Nerdgirl

@darkb0nebeauty @Nishant_Garg

- Nerdgirl

I got D is that right?

- Nerdgirl

Please I've been at this for hours I just need an answer

- anonymous

I think you should first calculate angle C
\[\frac{\sin(C)}{19}=\frac{\sin(4)}{13}\]
Use this to find sin(C)
after that you can do
\[\frac{\sin(B)}{AC}=\frac{\sin(40)}{13}\]\[\frac{\sin(B)}{AC}=\frac{\sin(C)}{19}\]
this would be a linear equation in 2 variable once u find C then u can solve it using substitution methods

- Nerdgirl

Is D right?

- anonymous

Idk, I haven't calculated it

- Nerdgirl

*sigh* this is ridiculous.

- Australopithecus

I will show you how to solve this problem

- Nerdgirl

I just need to know if d is right or not

- Nerdgirl

y'know what, Nvm, I finished it. no medals for anybody

- Australopithecus

\[\frac{\sin(A)}{a} = \frac{\sin(B)}{b} = \frac{\sin(C)}{c}\]
|dw:1433428299531:dw|
so you will have an equation set up as follows:
sin(B)/b = sin(C)/19 = sin(40)/13
You will need to solve for C
then remember that
180 = Angle A + Angle B + Angle C
Then you can solve for angle B

- Australopithecus

yes your answer is correct sorry just woke up

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