Answer:
pi
Step-by-step explanation:
I think it is givin. But I’m am not 100% sure
All have 4 sides. That’s what I would put. Good luck and don’t copy links they’re most likely viruses
Answer:
about 23% I think
Step-by-step explanation:
I'm not really sure how to get to this though besides just plugging it into your calculator

so... notice the picture below, the angle in the fourth quadrant
now... notice, the cosine is just the distance the angle makes with the x-axis
so... using the pythagorean theorem, get the opposite side, from that triangle, keeping in mind that, "y" is negative in the 4th quadrant
once you get "y", get any other trigonometry value you need :)