#### Top Comments

• You guys from Greece should be learning economics........﻿

• I﻿ should do my schoolwork on Youtube, it makes more sense here

#### All Comments (1,128)

Sign in now to post a comment!
• For anyone who doesn't know the degree or radians of sin,cos,tan,( to be honest I'm sure which) but REMEMBER THIS SEQUENCE 1,2,3, then 3,2,1. Simple. 30,45,60 degrees. For example Sin 30 degrees is √(1) ÷ 2 , 45 degrees √(2) ÷ 2 and 60 degrees √(3) ÷ 2. Next Cos √(3) ÷ 2,√(2) ÷ 2,√(1) ÷ 2. Plus where did MATHTV get the 1/2. Well check the calculator on the﻿ computer or check on the number √(1) ÷ 2=1/2 :) and tan=Sin/Cos Hope this helps anyone who forgot about sin,cos,tan .

• I agree and I TRULY BELIEVE that there are far better people to explaining the details or subject for example let's say Calculus while let's say you are a high school student or a person getting ready to take calculus and need some kind of insight on the material this is the place. But﻿ there ARE some professor who MAY know the material BUT depending on the day or THEY CAN'T TEACH I go on the internet and hope someone can explain the material in their own words. I'm really glad MathTV is here.

• Never mind I just found the﻿ antiderivative formulas and finally understand how to do it thanks :)

• I was trying to follow and I think I got it but when I check my formulas d/dx(sin(x)) = cos(x) not﻿ -cos(x)

• cos pi over 4 is 1 over sqr root﻿ of 2?

• You are a great teacher because of this I will be﻿ ahead of the other students in my class

• I bet﻿ x_x

• thanQ alot for this great help﻿ :D

• Nope, didn't say it to﻿ seem smart...the situation here sucks man.....screw em....

• Loading comment...
Loading...
Advertisement

#### Suggestions

Loading...
Working...
Sign in to add this to Watch Later