#6sint-sqrt3=4sint why is the answer 2pik+pi/3 , 2pik +2pi/3 and not just pi/3 + 2pik

51 messages · Page 1 of 1 (latest)

spark sandal
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I don't get trig.

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dull herald
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And is 2pi/3 a solution?

spark sandal
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2pik+pi/3 , 2pik +2pi/3 k is any integer

dull herald
spark sandal
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yep

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both are the answers

dull herald
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...did you check?

spark sandal
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thats what my software told me

dull herald
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"Software"?

spark sandal
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im using web assign

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for homework

dull herald
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...is that a calculator?

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Because when I say "check", I mean "by plugging in to the equation".

spark sandal
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no its my homework website

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oh. i mean im 100% sure thats the correct answer

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because its the solution that my homework website gave me

dull herald
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...homework websites can make mistakes.

spark sandal
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the homework website is the same website that is assigning me homework

dull herald
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So what?

spark sandal
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like its what my teacher uses to give me homework

dull herald
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So what?

spark sandal
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why is it not the correct answer

dull herald
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I'm not saying it's not the correct answer, I'm saying you haven't checked that it is.

spark sandal
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okay im not really sure how to respond to that

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i tried the problem already and i got something else

dull herald
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When Euclid proved the fundamental theorem of arithmetic, did he make sure he got it right by checking an answer key?

spark sandal
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i am not euclid. i did the problem i just need to see what i did wrong

dull herald
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The point is, if you want to learn and understand math, you need to be able to work on it independently. You need to never take anyone's word for anything. You need to always seek the proof.

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What is the proof that some value is a solution to some equation?

spark sandal
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dude im just trying to pass my exam im not a math major

dull herald
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What I'm hearing is that you don't actually want to learn math, in which case I can't help you, because I teach math.

spark sandal
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can you just explain to me what im doing wrong

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like in the problem

dull herald
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Taking the answer key's word for it instead of checking the answer for yourself is one thing you're doing wrong.

spark sandal
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i mean i did the problem

dull herald
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I have seen no evidence of that.

spark sandal
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why cant i trust the answer key

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because i gave you the wrong answer

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i need to figure out why my wrong answer is wrong

dull herald
dull herald
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You made a mistake.

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Answer key authors can also make mistakes.

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You need to check that possibility.

spark sandal
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okay but this is basic trig chances are the answer key is right

dull herald
spark sandal
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dude im just trying to pass my trig exam

dull herald
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Which you aren't going to do by being lazy.