Trigonometry - The General Sine Wave

This video shows how to graph the sine and cosine functions.

[matheusdiazz]

Hey, Im 16 from Ecuador, high school student, i was looking on youtube for videos to practice for the math on the SAT exam and found out your channel, i watched like 2 videos and I gotta thank you a lot for doing this content, for real you are helping people like me. (I wanna take the SAT exam to get into a US college to play tennis). So thank you for your amazing job 👍

[tasha]

For the last problem, isn't the last point supposed to be 3pi/2 ? After adding pi in the original function, I thought we add pi to all three parts, but it seems on the video the last one, 2pi, stayed the same instead of being 3pi, then divided by 2 to get 3pi/2.

[matheusdiazz]

Hey Steve, to put you in the zone, I am 16 years old and when I finish the school year that I am currently studying, I would have two years to graduate, my objective is to get into UCLA through a tennis sports scholarship, but I am also a good student, my Question is, I have googled how to enter UCLA and I have read that I require a score of 4.0 or more GPA and in my country (Ecuador, South America), we do not handle that GPA system and I do not know what it is, could you explain what it is and also tell me if there are websites where to practice SAT math exercises?