Exactly my thoughts. Awesome.

Shouldn't theta be 60 degrees for the first problem when using sin for the angle within the 90 degrees triangle ? the 120 degrees you're using for theta is outside of the internal angle for the right angled triangle.

Dave Dogge I think so.

definitely helped 8th grade me.

In all seriousness game dev is one of the easiest ways to learn complex maths. It's much easier to pick it up when you have an actual reason to use it.

Prototype Theta Yeah, it's really amazing. I wish it was possible to have lectures like this in school, would help me concentrate so much more. And the visuals really aid the understanding!

Prototype Theta, I agree with you.

We got taught it as Silly Old Hitler Coudnt Advance His Troops Over America

@@bobdagamer640 💀

In France we say CAH SOH TOA (casse-toi = get the hell out)

Nadim78Nadim NFA SAME HERE, BRO

YES

yeah it worked for me, for some reason the player wouldn't rotate diagonally but this fixed it!

I think he said he´ll be making a video on Quaternions soon.

@@novacti5254 *so that was a fucking lie*

Check the chanel of 3blue1brown, he has awesome videos explaining math stuff

@@novacti5254 its been 5 years

@@pitchblack5422 The dream lives on :')

Chupachu that would be cool!

Unity

I can't see why he used an angle which is external to the right angled triangle, I think you're right, he should have used 60 degrees for the theta angle in the first example. 120 degrees has nothing to do with calculating the cos, sin or tan of that triangle.

So after mulling over my problem, I think i might understand how you would get the angle in the opposing unit circle to whichever unit circle you are currently working with (which conventionally is the trig unit circle?). Anyway, from how i understand it, if the trig unit circle is the default, and the angle is 0 degrees. Converting the angle to unity's unit circle goes as follows: 1) 90 - 0 = 90, 2) Taking note that the result is a positive value, you should then "increase" the angle from the naught angle in the unity unit circle (or whichever unit circle for whom you are converting the angle). 3) If the result were negative, e.g. if the angle to convert were 180, then 90 - 180 = -90, which means you should "decrease" the angle from the naught angle in the unit circle of interest, or rather, "increase" in the opposite direction to how angles are usually incremented in that unit circle. Which in the Unity unit circle, where angles increase clockwise, you’d find this angle by "increasing" in the anti-clockwise direction from naught. Just my way of understanding. I would appreciate it if anyone could clear up any errors within it. Thanks for reading this far. Cheers

He is trying to find the direction his character should be facing based on the angle that is used. As he explained earlier in the video, you find the direction by taking the Sin and Cos of the angle, multiplied by the degree-to-radian conversion, and place that into your coordinates (x, y). (I know I'm answering this question 8 months after it was asked, but maybe someone will stumble upon this video later and have a similar question)

Might be a little too late, but you can add an if statement to the area with the GetAngle variable.

I know I'm super late to the party, but with trig, the triangle is for visualization. you care about the vector of r=1. so you take the angle from origin not in the triangle.

Hey, a bit of a late reply, but if you want to dig deeper into AI I suggest this book : Artificial Intelligence: a Modern Approach. It really covers any AI you might need in a video game and more

Theta* The symbol represnets the angular position of a vector. Kind of like how X represents the the location along the "X-Axis" and Y represents the location on the "Y-axis". Yes technically you can substitute whatever symbols you want there. However then you have to explain what those symbols mean. By standardizing things like X, Y, Z and Theta you and everyone else immedietly understand what they represent. It confuses almost no one. Most people have already taken high school level math classes to know what theta is.

I didn't finish high school yet that's why I left this comment. I just learned the most basic things about trigonometry like sine, cosine and tangent(even though I already knew those. Anyway thanks for the correction

yw

I was going crazy, thank you for highlighting that "Also the fact that unity's angles aren't the same as the standard trig angles has given me so many problems in the past, it's so annoying. "!

They also mixed the axes in my opinion, in other 3d programs that i've used the z angle is up but no, Unity chose to go for the y angle, you gotta get used to it