Question

Which of the following problem types CANNOT be solved using the law of sines?

**Choose ALL that apply!!!***

A. SAA

B. SSS

C. AAA

D. SAS

E. ASA

**I'm confused :( can you please explain? thank you :)

Answer 1

http://2000clicks.com/mathhelp/GeometryLawOfSines.aspx

Answer 2

wait so it says that AAS and SSA are the ones that can be solved using law of sines... but those aren't even any of the choices :/

so is the answer SAS and SSS? since those are used with law of cosines? ;/ so B and D? :/ is that it?

Answer 3

Let me elaborate...

Answer 4

haha okay :)

Answer 5

You can use the law of Cosines when u have
SAS (2 sides and the angle between them)
SSS (all sides)

Answer 6

Hint: In order to use law of sines, you need angles and sides for one triangle. If you only have all angles, or all sides, law of sines is useless.

Answer 7

ohh so is the answer B and C? SSS and AAA?

Answer 8

All other choices

Answer 9

those are the ones that cannot be solved using law of sines? the other ones can?

Answer 10

SSS and AAA cannot

and all the rest can?

Answer 11

these can

Answer 12

The problem asks which CANNOT be solved using law of sines.

Answer 13

the question is asking about the ones u cannot use

Answer 14

ohhh wait what? haha sorry I'm a bit lost lol

Answer 15

A, C, E

Answer 16

Question: Which of the following problem types CANNOT be solved using the law of sines?

Answer 17

yeah, which i can't use.. so far, we can't use SSS or AAA? ;/ is that right? SSS and AAA cannot be solved using law of sines?

Answer 18

Key word- EXCEPT

Answer 19

@Haiqa, I think you're confusing her

Answer 20

If u have SSS or SAS u can use the law of cosines to solve

Answer 21

yeah sorry I'm a bit confused :/ but @Hero said that "Hint: In order to use law of sines, you need angles and sides for one triangle. If you only have all angles, or all sides, law of sines is useless." so doesn't that mean that SSS and AAA are useless if applied with law of sines? :/

Answer 22

If u have
SAA
AAA
ASA
You cannot use the law of cosines

Answer 23

It says "law of sines" not law of cosines @Haiqa

Answer 24

Why do you keep bringing up the law of cosines? This problem is asking about the law of sines?

Answer 25

My bad...

Answer 26

Excuse me

Answer 27

hahaa its all good :P

Answer 28

but I'm still a little lost atm :/ err so SSS and AAA are two of the answers right? since they cannot use law of sines? is that right? :D

Answer 29

yes

Answer 30

So
any time you have two angles (and then can easily figure out the
third), it's easy to use the law of sines: ASA or AAS.

Answer 31

http://mathforum.org/library/drmath/view/69918.html

Answer 32

okay :)

so those are the only answers right? since the rest all have a mixture or sides and angles? :)

Answer 33

With ASA and AAS you can use this law

Answer 34

U with me?

Answer 35

mhmm :)

Answer 36

U can eliminate those answer choices

Answer 37

but for this problem, the only answers are SSS and AAA right? cuz they CANNOT use law of sines?

Answer 38

There's one more @iheartfood

Answer 39

@Haiqa finally pointed out what can be used. So there's more more that can't be used.

Answer 40

If u have 2 angles and a side or 2 sides and an angle then the law is used. so...

Answer 41

so are the answers A,B, and C ?

Answer 42

No

Answer 43

Why would A be an answer?

Answer 44

AAS and SAA is the same thing btw

Answer 45

Remember, SAA has 2 angles and a side

Answer 46

I don't mean to confuse you @iheartfood

Answer 47

3 angles (AAA) or 3 sided (SSS) will not be used in this law

Answer 48

She already knows that @Haiqa

Answer 49

okay.. but don't the others all have either one side and two angles or two angles and one side?

haha and no worries @Hero :) i was kinda confused before haha :P

so idk what the third answer would be :(

Answer 50

Sorry to confuse u. Its pointless to have only 3 angles or only 3 sides

Answer 51

@Haiqa mentioned what you can use; I mentioned what you can't use. There's only one option left that can't be used.

Answer 52

no worries haha @Haiqa i meant that i was confused already when i posted lol :P

Answer 53

ohh so the answers are B,C, and D?? the third one being SAS?

Answer 54

Finally :D

Answer 55

hahaa yeah :P sorry y'all! thanks a bunch!!! :D

Answer 56

Because if you have two sides and only one angle, that's useless. You won't be able to find any more angles unless you use some other law.

Answer 57

ahh i see... i have another one that's similar to this, but it asks which CAN always be solved using law of cosines OR sines... can i post that here?

Answer 58

post another question, its so crowded

Answer 59

okay :)

Answer 60

CORRECT ANSWER: SSS, AAA, SAS