Angle Between Two Lines

I hope this straight line video lesson was helpful in gaining some concepts of straight line mathematics.

[PrithwirajSen-njqq]

tan theta 1 =m1
theta 1=tan^(-1)m1
tan theta 2 = m 2
theta 2=tan^(-1)m2
Hence
α = tan ^(-1)m2 - tan^(-1)m1
= tan^(-1) [ (m2 -m1)/(1+m1m2)]
Mod value is of the acute angle.
The obtuse angle =180 degrees - acute angle

[flw]

Great vid! Was hard to find this info and you explained it well!

[vhiedkc]

Awesome thanx alot from Tanzania God bless you
Asante sana

[xenon]

Thanks bro u explaned by forming case it helped alot

[krishnagautam]

Became a good learner... Thanks... Became ur fan.... In a video....

[maazsiddiqui]

Very Good Explanation ! Made my Concepts Clear !

[ispete]

Good explanation. Thank you for the video.

[kultome]

good for reviewing for tests... nice work!

[minjun]

May I know which one is the previous lesson of this?
Thank you!

[convergentradius]

How can we take infinity*0=1?
If infinity*0=1 then
2 = Infinity*0 + infinity * 0
= Infinity * (0+0)
= Infinity *0
= 1
We can't take infinity *0 = 1 because it leads to a paradox where 1=2

[okashakhan]

Sir.. may you tell me what kinda software are you using?

[gwho]

i like the animation. could be more concise and shorter.

[narasimharaokonka]

సమాంతర మరియు లంబ రేఖల యొక్క రుజువుల వివరణ నిజంగా అద్భుతమైనది మరియు పంక్తుల మధ్య కోణం అద్భుతమైనది.

[rochellenicasolomon]

what if the slope is undefined? I really need help coz its our prelims tomorrow