What to watch next! ✅ Know when to use your identities - czcams.com/video/UArTcfYWZf/video.html ⭐ New Analytic Trigonometry Videos - czcams.com/play/PL0G-Nd0V5ZMpS-xr6lqdrzxXdQGZ3wcBG.html ✅ More Examples Solving Problems using Identities - Solve Trigonometric Equations czcams.com/play/PL0G-Nd0V5ZMoOmjiszWqJqWUKDcLSDNvm.html
The period for Sin and Cos is 2π, the period for Tan is just π. Brian noted here that since we are looking for +/- solutions for this particular problem, the solutions repeat with 2 sets of numbers each a series with π as the difference. I highly recommend you look at Desmos, graph this problem, and you'll see this more clearly.
The square root of 4 is 2. The solution to X^2-4=0 is +/- 2. See the distinction? I work in a high school, and the middle school teachers mess this up badly for us.
On the bottom of the youTube screen, go to settings, and adjust speed to .75. It will sound perfect for you. When I am helping students, I am very self aware that I might be too excited and my talking speed gets a bit fast. I improved by telling the class to just say "slow down" if they see it happening. Over the years, I've gotten better with that feedback. When I listen to Brian (as I try to pick up tips tricks for my own teaching) I'm thinking "this guy really knows his stuff, and presents it in a really understandable way.
What to watch next!
✅ Know when to use your identities - czcams.com/video/UArTcfYWZf/video.html
⭐ New Analytic Trigonometry Videos - czcams.com/play/PL0G-Nd0V5ZMpS-xr6lqdrzxXdQGZ3wcBG.html
✅ More Examples Solving Problems using Identities - Solve Trigonometric Equations
czcams.com/play/PL0G-Nd0V5ZMoOmjiszWqJqWUKDcLSDNvm.html
ur the best math teacher ever
4cos²θ-3-1=-1
4cos²θ-4=-1
4sin²θ=-1
sin²θ=1/4
sinθ=-1/2
sinθ=sin5π/6
θ=2κπ+5π/6
θ=2κπ+π-5π/6
Then which one is the right one?
sin^2 cant be -
@@extremeusace4189 what?
@@randmgenericname5077 square term shouldn't have negative value
Thank you teacher!!
I wish you could be my teacher even once before I end my course,
Thank you!
At 7:11, i got confused, because ive seen people using pi n and 2pi n. Whats the difference between using those two?
The period for Sin and Cos is 2π, the period for Tan is just π. Brian noted here that since we are looking for +/- solutions for this particular problem, the solutions repeat with 2 sets of numbers each a series with π as the difference. I highly recommend you look at Desmos, graph this problem, and you'll see this more clearly.
From lebanon love u 🇱🇧
😍😍😍
😍😍😍
Verny nice teacher #BrianMcLogan. Hugs from Managua, Nicaragua! Saludos.
El mejor maestro
How come square root of 4 is just 2 and not plus/minus 2 when u applied the rules for radicals
It would have been, I did it correctly with the trig example
The square root of 4 is 2. The solution to X^2-4=0 is +/- 2. See the distinction? I work in a high school, and the middle school teachers mess this up badly for us.
Thank you so much I in fourth grade and because of you I am the smart math solver in the class
Why not 3rd grade?
You are very welcome!!
Your learning this in 4th grade, don’t we learn adding fractions with the same denominators in 4th grade
@@devinliu9219 no its really because he takes an interest in math like me, I'm in 7th grade and I am trying to learn the quadratic formula
My god I finally understand this.
If my next math teacher doesn't have a feminine cadence I'm leaving the classroom
for real
Sorry to say no offense but you talk way to fast like your quick or something.No offense sorry thx
No that is great Tom, will try work on slowing it down, always been a problem of mine
On the bottom of the youTube screen, go to settings, and adjust speed to .75. It will sound perfect for you.
When I am helping students, I am very self aware that I might be too excited and my talking speed gets a bit fast. I improved by telling the class to just say "slow down" if they see it happening. Over the years, I've gotten better with that feedback. When I listen to Brian (as I try to pick up tips tricks for my own teaching) I'm thinking "this guy really knows his stuff, and presents it in a really understandable way.