Mr. Rich Math Q and A - February 2, 2025 скачать в хорошем качестве

Mr. Rich Math Q and A - February 2, 2025

Mr. Rich answers his students' math homework questions, mostly from AP Calc and AP Precalc classes! He also worked a few SAT math problems! On the problem in the video where it was a trig equation: sin(a) = cos(b), and a was 70% larger than b, here is the solution: If two angles "a" and "b" have equal sine and cosine, they must be complementary! This is what Mr. Rich forgot when racking his brain for this solution! So, we can say: a + b = 90, and a = 1.70b (a was 70% larger than b), so: 1.70b + b = 90, so 17/10 * b + b = 90 So 27/10 * b = 90 b = 900/27 or 100/3 so a = 90 - 100/3 = 170/3