Law of Sines : A Quick Example

[VegasStreetLights]

Adam went over the law of cosines. I love it. Thank you for the video

[venkats]

Please do more of these triangle solving videos!

[S-xw]

Hello Patrick, do you have some learning videos that may help for the ACT exam?
Thank you for your hard work.

[alexandrewsgosiangco]

about time to study because of my surveying class, tnx alot

[benjaminb.]

Hey Patrick, i recently bought your book and just cant seem to figure out why a step in the solution is correct. Might be just my brain that fried by doing too much math and the asnwer is obvious, but i just dont understand.

The problem i am referring to is Nr. 59.
In the solution you expand the fractions so they all have the same denominator (4* (x-1)*(x+1)). But in the next step the "4" is suddenly gone. That is the part i dont understand, the solution never divided by 4, so i just dont understand where it went.

The solution went from: (4*(x+1))/(4* (x-1)*(x+1)) + (4*(x-1))/(4* (x-1)*(x+1)) + (3*(x-1)*(x+1))/(4* (x-1)*(x+1)) > 0
To: > 0

Pretty hard to read in text format, but if you have a copy at home you can check it out there.
Although i am having this problem, I really enjoy your book, helped me quite a lot!

[xenexphobia]

wow this will be useful thanks man great channel