Math Help

[Tash8]

so i'm doing a review for pre-calc final but i need help wit something

i completely forgot how to do this

find the angle between the lines 3x+5y-1=0 and x=2

I know this is REALLY easy, but i'm just blanking it out on it

[Johnny Quid]

3x+5y-1=0 and x=2

6+5y-1=0

5y= -5

y= -1

[Tash8]

yea no... i dont think that's right.

[Johnny Quid]

yea no... i dont think that's right.

it`s right believe me

[Tash8]

except I'm trying to find out an angle and not what y is. and X=2 is it's own line.

[whtcrack]

6-1 + 5y = 0
5 + 5y = 0
5y= 5
y = 1

if x= 2 and then y = 1 are lines then it would be a 90 degree angle right??

[Tash8]

6-1 + 5y = 0
5 + 5y = 0
5y= 5
y = 1

ur even more wrong!

[Johnny Quid]

i don`t know then... sorry

[Tash8]

I got 59.04 degrees, but I think that's wrong.

[whtcrack]

6-1 + 5y = 0
5 + 5y = 0
5y= 5
y = 1

ur even more wrong!

lol your right its been ahwile.. the other guy is right its -1... forgot you had to add the one to other side before doing anything else..

[Tash8]

6-1 + 5y = 0
5 + 5y = 0
5y= 5
y = 1

ur even more wrong!

lol your right its been ahwile.. the other guy is right its -1... forgot you had to add the one to other side before doing anything else..

lol except he's wrong too

3x + 5y - 1 = 0 (is a line)
x=2 (is another line)

you can't just plug it into each other!

thx anyways guys

[mcZu]

Shouldn't you be using this formula?

[dR3]

Shouldn't you be using this formula?

You use that to find x1 an x2, which is not the case here.

And I can't seem to find the answer to the OP's question.

[mcZu]

Shouldn't you be using this formula?

You use that to find x1 an x2, which is not the case here.

And I can't seem to find the answer to the OP's question.

Yeah, I know. I couldn't find the answer either, that's why I thoughted maybe Tash meant to find x1 and x2. Finding the angle of that seems to be impossible.

[dR3]

Yeah, it's a weird assignment. Unless he's studying something I haven't studied about yet.