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Mathematics 19 Online
OpenStudy (anonymous):

WILL FAN AND MEDAL What is the measure of angle J in the triangle below? Drawing is not to scale.

OpenStudy (anonymous):

OpenStudy (anonymous):

I really don't understand this and need help, if someone can guide me through it, or someone has done this. Please and thank you!

OpenStudy (bobo-i-bo):

Do you know the law of sines?

OpenStudy (anonymous):

I know that Sine=Opposite/Hypotenuse

OpenStudy (anonymous):

\[\frac{ \sin(103) }{ 16 }=\frac{ \sin(J) }{ 11 }=\frac{ \sin(K) }{ JL}\]

OpenStudy (bobo-i-bo):

okay, so you have: \[\frac{ \sin(103) }{ 16 }=\frac{ \sin(J) }{ 11 }\] In this equation, you have only one unknown. Can you see that? Can you see what to do?

OpenStudy (anonymous):

So I just have to find the variable, J, now, right?

OpenStudy (bobo-i-bo):

I believe that is what the question is asking for after all, yes :P

OpenStudy (bobo-i-bo):

And do you know how to find J?

OpenStudy (anonymous):

Cross multiply, and then go from there?\[11 \times \sin(103) = 16 \times \sin(J)\]

OpenStudy (bobo-i-bo):

That is absolutely valid, yes. Continue ^_^

OpenStudy (anonymous):

https://gyazo.com/44679c55825358a2a353d5e403cdbac3 I got this a 0.66988.... But I don't know what to do with the sin part of J??

OpenStudy (anonymous):

Does anyone know what to do??

OpenStudy (aveline):

Y'all are overcomplicating this: \[\frac{ 16 }{ \sin(103) } =\frac{ 11 }{ ? }\]

OpenStudy (anonymous):

That's what I did, except the fractions were in reverse, and if you cross multiply, you get the same thing, 0.67, and I think yuour suppose to do asin(0.67) i.e. sin^-1 (0.67) I seriously have no idea, if that is right, because that equals 42.067...

OpenStudy (anonymous):

@Ms-Brains

MsBrains (ms-brains):

@kayders1997 Can you please help my friend here?

MsBrains (ms-brains):

Sorry, Girl I got no clue.

OpenStudy (anonymous):

K, thanks anyway :)

OpenStudy (kayders1997):

You have to take the inverse sin

OpenStudy (kayders1997):

Here let me try quick

OpenStudy (aveline):

GURRRRLLLLLLLLL lemme help ya out: "I seriously have no idea, if that is right, because that equals 42.067..." 42 degrees ;)

OpenStudy (anonymous):

Yeah, I did asin on the calculater, which is the inverse, but I don't know if it is correct

OpenStudy (kayders1997):

That is what I got

OpenStudy (kayders1997):

What did you get?

OpenStudy (kayders1997):

Make sure your calculator is in degree mode

OpenStudy (kayders1997):

Than cross multiply

OpenStudy (anonymous):

https://gyazo.com/f520fde89b1c9126833c5e4970fa3a28 That's what I got

OpenStudy (kayders1997):

Yay :)

OpenStudy (anonymous):

Thanks @Aveline

OpenStudy (anonymous):

And @kayders1997

OpenStudy (anonymous):

I just wanted to be sure :)

OpenStudy (kayders1997):

We're here to help :) if you need help you can always comment my name :)

OpenStudy (anonymous):

K, thanks, I'll close this and tag ya'll if I have another hard question :)

OpenStudy (kayders1997):

Sounds good :)

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