While I am technically eligible to take the Calculus course the school I attend offers, I elected to take Trig this spring instead as that has cause mass amounts of head-ache for me in the past.
Before I actually go into that class, however, I would like to do a bit of self study. My problem is I'm not exactly sure where to find good online resources for self teaching math. I've done a google search or 20, but I'm not even sure where to go with it.
I gotta say I already like it. They have literally thousands of video tutorials over hundreds of topics across various topics. And most the videos I've watched so far have been really great at what explaining the subject they covered.
Video tutorials are slow.
¿could you post your course plannification? Trigonometry was just a subject, so I wonder what a full length course could reach.
I found this when I was reading into a book on Neural Networks. In said book they used the cosine function, which I had never encountered before. Needless to say, Google gave me justice.
Don't they teach trigonometry in high school wherever you live? Or is this something advanced? (I wonder what advanced trig could be though.. Fourier series?)
I found this when I was reading into a book on Neural Networks. In said book they used the cosine function, which I had never encountered before. Needless to say, Google gave me justice.
To better understand the trigonometric functions, look up the unit circle. I would call this pre-calculus rather than trigonometry, though.
Since we're on a C++ forum, consider writing a program that draws a circle on the screen. The screen is a 2D (Cartesian) coordinate system. There are two challenges here: 1) how do we traverse the circle about its origin? 2) How do we get x and y coordinates for a position on the circle? For the first, a polar coordinate system makes this a simple for loop about the origin with a fixed radius. For the second, we need a function to translate the polar coordinates to Cartesian coordinates. Those functions are thus defined as the cosine and sine (for finding the x and y, respectively).
It's an interesting application of the unit circle concept. The unit circle begins at (1,0), or the farthest point right of the circle and traversal is typically counterclockwise. So when someone asks what the sine of 90 degrees is, you think of the point at the top center of the circle's y coordinate, which is 1.
I'm sure resources online should cover this better I, so I'll leave it at that. Hope this helps.