How do you find the angle between two lines when one line is vertical? (1 Viewer)

[sinophile]

How do you find the angle between two lines when one line is vertical?

 

[GUSSSSSSSSSSSSS]

if one line is vertical
then u can find the angle between the other line and a horizontal line, then subtract this answer from 90 degrees

xD

 

[shuning]

回复: Re: How do you find the angle between two lines when one line is vertical?

y the fk have i never tought of it T.T

 

[annabackwards]

What Gu(sx13) said.

EDIT - Damn, Shuning got to reply 1st :'(

 

[shuning]

回复: Re: How do you find the angle between two lines when one line is vertical?

LOL xD

havent posted in ages T.T

 

[sinophile]

Re: 回复: Re: How do you find the angle between two lines when one line is vertical

Yeah, but what if the 'other line' forms an obtuse angle with any horizontal line?

 

[annabackwards]

Re: 回复: Re: How do you find the angle between two lines when one line is vertical

LOL xD

havent posted in ages T.T

Post some more!

@sinophile - please post the specific question up

 

[MC Squidge]

Re: 回复: Re: How do you find the angle between two lines when one line is vertical

the angle = arctan|(1/m)|

where m is the gradient of the non vertical line

 

[Dumbledore]

if its obtuse then @-90 or |90-@|

 

[shuning]

回复: Re: 回复: Re: How do you find the angle between two lines when one line is

Post some more!

@sinophile - please post the specific question up

too dizzy to think of anything to post T.T

 

[sinophile]

Re: 回复: Re: How do you find the angle between two lines when one line is vertical

the angle = arctan|(1/m)|

where m is the gradient of the non vertical line

Nice method. Would you need to explain how it works in an exam situation, or could you just write it down, plug the numbers in the equation and still be full marks?

 

[MC Squidge]

Re: 回复: Re: How do you find the angle between two lines when one line is vertical

the latter

 

[adomad]

Re: 回复: Re: How do you find the angle between two lines when one line is vertical

protractor?

 

[gurmies]

LOL, tech ay? Who are you?