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- anonymous

law of sines pls help will become fan and give medal
find the area of ABC. round your answer to the nearest tenth.
m

Mathematics
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**- jamiebookeater

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- anonymous

a.
44.5
c.
49.4
b.
33.6
d.
77.1

- jdoe0001

hmm well. if you're using the "law of sines', that may not give you that much, since you only have one angle and its side is missing
even if you were to find the side "b", how are you meant to get the area?

- anonymous

no idea thats just what the question asks

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## More answers

- jdoe0001

well. have you covered the law of sines?

- jdoe0001

or have you covered the law of cosines?
how about heron's formula?

- anonymous

no idea on any of that

- anonymous

i know the law of sines formula

- anonymous

i got c for this question is that right

- jdoe0001

how did you get "c", if you dunno any of the sections above?

- anonymous

49

- anonymous

i just said i know law of sines

- jdoe0001

anyhow, in this case what I'd use is the law of cosines, and then heron's formula
but you haven't covered either, thus, you may want to do that firstly
check your material for both, otherwise, I'd say the exercise doesn't apply to you

- jdoe0001

the law of sines alone in this case, is not help, because side "b" is missing

- anonymous

1/2 * (10.1*9.8 SINS 87) and i got 49

- jdoe0001

1/2 base * height, to get the area of a triangle, only applies to right-triangles
this one doesn't come across to me to be one

- jdoe0001

well.. .I take that back
1/2 base * height does apply to all triangles
BUT
we dunno the triangles altitude, or height in this case, just its base

- anonymous

well i got 49 and thats an option so thats what im putting

- anonymous

i dont know how else to answer it

- jdoe0001

if it were a right-triangle, it'd simple to just grab either side and use it as altitude
but angle B is 87 degrees, not 90

- jdoe0001

I myself, don't see how the law of sines alone would do it in this one
I'd use the law of cosines to find "b", and use that in Heron's formula to get the area

- anonymous

the test is titled LAW OF SINES

- anonymous

then whats the law of cosines forumula

- jdoe0001

doesn't matter, you need to cover that first
but surely your book would have it

- anonymous

im not in a book im taking an online test

- anonymous

can you just help me

- anonymous

thats why im here

- jdoe0001

well,, surely it has studying material, so
you see, the issue is, if the material hasn't been covered, there's no sense in giving the exercise
I've heard some folks say that, online classes and such, I don't see how that exempts them from studying
now, it may be that the site is giving you something that hasn't been covered
but if you haven't covered something, there's no sense in giving you the exercise

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