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Mathematics 18 Online
OpenStudy (anonymous):

Question Two sides and an angle are given. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results. B = 30°, b = 14.5, a = 12.3

OpenStudy (anonymous):

This will provide an ambiguous case of triangles. Possible 2 solutions. This is an (SSA) triangle.

OpenStudy (anonymous):

Okay, I've just solve it, there is only 1 solution. Do you know how to solve it?

OpenStudy (anonymous):

*solved

OpenStudy (anonymous):

|dw:1352005114464:dw|

OpenStudy (anonymous):

To solve for any give side or angle, use the law of sines in this case.

OpenStudy (anonymous):

You still there?

OpenStudy (anonymous):

|dw:1352005244029:dw|

OpenStudy (anonymous):

12.3sin(30)/14.3 = 24.64

OpenStudy (anonymous):

That is really, really close. Its off by like 1 degree.

OpenStudy (anonymous):

my ti give me in decimal .4301 and in degree 24.64

OpenStudy (anonymous):

It would be 25.472 degrees.

OpenStudy (anonymous):

|dw:1352005756625:dw|

OpenStudy (anonymous):

Now, since you know two angles, you can find the 3rd by their sum up to 180 degrees.

OpenStudy (anonymous):

Can you figure out angle C?

OpenStudy (anonymous):

25.472+30=x 180-x= Angle C

OpenStudy (anonymous):

124.5

OpenStudy (anonymous):

Yep

OpenStudy (anonymous):

this are the possible answers no triangle two triangles A1 = 36.12o, B1 = 113.88o, b1= 22.49 A2 = 143.88o, B2 = 6.12o, b2 = 2.62 one triangle A = 36.12o, B= 113.88o, b= 22.49 one triangle A= 143.88o, B= 6.12o, b= 2.62

OpenStudy (anonymous):

and any of the answers we solve is there

OpenStudy (anonymous):

is not there

OpenStudy (anonymous):

Ok, so Angle B is given in the question as 30 degrees. It doesn't match any of the solutions.

OpenStudy (anonymous):

I know!

OpenStudy (anonymous):

Is there a mix-up in the choices?

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

Here is what I got when I solved it: sides: a=12.3 b=14.5 c=23.783 Angles: A=25.096 B=30 C=124.903

OpenStudy (anonymous):

Sorry, but there is a mix-up in the answer choices.

OpenStudy (anonymous):

so what i do :(

OpenStudy (anonymous):

Are these computer choices, or paper choices?

OpenStudy (anonymous):

computer is an online assigment

OpenStudy (anonymous):

The fact that it's not an ambiguous triangle is weird. (SSA). There are normally 2 solutions, but this one only produced 1. Its also none of the provided choices. There must be a mistake somewhere.

OpenStudy (anonymous):

Actually hold on on sec.

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