Find Area of Red Region

I thought this was a fun one, and it includes a little bit of trigonometry!

[rninness]

Some people doomsday prep. I’m prepping for when my daughter comes to me with her high school math homework. Thank you for your videos.

[weemanling]

I swear every problems solution just boils down to "make a triangle"

[dittilio]

For future viewers, there's the cosine rule for non-right-angle triangles.

And if you aren't allowed to use a calculator, there's also standard trig identities for equilateral and right angle triangles (i.e. the angles will always be the same, and some ratio of sides). E.g. sin(60°) = 2/√3.

[yasin]

Very interesting. I thought it would be really hard as its such an odd area but actually it's pretty doable

[kanthvinay]

Great video! What tools do you use to make those illustrations?

[timothymcalinden]

You just covered more than I learned in my entire senior year math in a 3 minute video. 😂

[peterlosee]

Did I overcomplicate this by using the Heron formula from the last video on this channel that I watched? Yes. Did I realize then then the simpler way shown here actually became important later on? Yes. Welp. This is why I watch. This channel is a fun way to learn, and specifically to learn from your mistakes.

[anonymous]

Hey, Andy. I have an idea about, you can try design your YouTube banner with math and leave some track like a line or curve in it, so people know you like doing that.

Idk, it's just an idea. Maybe design it normallly will be easier.

[Israel-Niles]

Why do you have to use a calculator for the inverse sine? Isn’t there a way to calculate it by hand?

[rupom_]

Okay but what if the Triangle was nit right angle? Then how would i determine the red area?

[wierzbix]

hey, you didn't pause! What if I wanted to do it myself?! ;)

[serk-s]

In the exact expression put the expression in braces and then put m²

[nickwanted]

you can find the exact eria. the sum of the non-right angles of the triangle is 180 so
factorization is all you need

[Ptaku]

wait, the answer isn't 69 or 420? shocking!

[CANALIMG]

Fuck bro.. I don't understand a fuckin shit.

Great vid btw