Getting the sides of unit circle Im very confused on how to get the sides of the unit circle. By that i mean like sin/cos of 0,90,180,360... I can get the others by this logic for example:
Image:

For example if it asks me

*

*Sin 150: I would first see the quadrant.. Its Quadrant II so it
means Sin is the only one positive... Ok so i know its positive, and
next i would know that sin is always the hieght so according to that
picture it is 1/2.. So i would know the sin of 150 is 1/2...

I can do that for every angle presented on the picture exept the 0,90,180,360... How do you possible calculate the sin/cos for the angles i just mentioned. Thankyou

In the following triangles, use the Pythagorean theorem to find the missing lengths, then find the trigonometric ratios for $0,\pi/2, \pi/3,\pi/4,$ and $\pi/6$. Don't even bother memorizing, just draw the appropriate triangle.

