Help with law of sines?

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I'm looking for angle B
XD can you help?

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Other answers:

I know the law of sines, and before I can find b, i need to find the angle c. so right now I have 13sinx=19sin40
@amistre64 Can you come help?
hi
would you like to how to do it or the answer
please don't spam in my question XD
yes
wait how old are you guys?
thank you
I'm 17. Now, can you help?
yup im 14 doe
do u just want the answer
yea
as long as you can help, I don't care.
and I want an explanation, not an answer
here is an awesome trig sheet that i made. you will find the law of sines on the right side. learnix.net/wordpress/wp-content/uploads/Trig-Cheat-Sheet-1.4.pdf
https://youtu.be/_syV6cDk7Lg
thats is the formula follow that
I already know the law.. I'm just not sure how to continue. I have the formula already
work out angle C first, and do it yourself that will give you angle B. you sais: "13sinx=19sin40" you called it x. call it C, be consistent with the diagram so 13sinC=19sin40 C = ..... B = .....
how do I work it out from there? that's why I'm stuck @IrishBoy123
...
I didn't even give options
what is angle C? you can work that out
right now I have sinC=19sin40/13. what do I do next?
use you calculator
use you"r" calculator
all I have is a scientific calculator
that's more than you need .... in terms of hardware arcsin (19sin40/13) = 70 -ish does that help?!
ohhh.. my calculator doesn't have arcsin. that was my problem
buy one that does :p lol!!
so what is B? does your scientific calculator have "+" and "-" buttons ?!?!
XD okay. so then I have a and c, they add up to 110. 180-110=70 so angle b is 70, right?
yes, hahaha
sounds about right!!
okay, can you help with the law of cosines?
fire away but open a new thread always open a new thread for a new question
I know that.

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