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Trending Posts
@sam9999
0
2 days ago
StemSocial
Most people (not all) don't know this but you should: How do you determine the number of times or how long a power bank can fully charge your device ? Find out
How do you determine the number of times or how long a power bank can fully charge your device ? So a couple of days ago, I was literally on the hunt for a laptop powerbank for…
@meta007
0
11 months ago
StemSocial
Another interesting problem related to circle and triangle
Hello math bugs(🐞) and hivers(🐝) I hope you are strong and stout and doing good in life You can see a ∆ ABC circumscribed by a circle. CD and BE , the bisectors…
@mes
0
10 months ago
MES Science
Trigonometry Identities: cos(2π + x), sin(2π + x), cos(π/2 -x), sin(π/2 -x)
In this video I show some very useful trigonometric identities which basically involve shifting the sine or cosine functions by either 2π or 360 degrees and π/2 or 90 degrees.…
@mes
0
11 months ago
MES Science
Vectors as Forces in Physics and Engineering
▶️ Watch on 3Speak In this video I go over applications of vectors in physics and engin
@mes
0
11 months ago
MES Science
Trigonometry and Limits: limit of sin(x)/x as x goes to 0
In this video I show a geometric proof of this very useful limit of sin(x)/x as x goes to 0. I will use this in later videos to prove many trig derivatives and integrals.…
@mes
0
11 months ago
MES Science
Trigonometry Identities: sin(x +/- y) = sin(x)cos(y) +/- cos(x)sin(y)
In this video I use the cos(x - y) identity which I proved in my earlier video to derive a very useful trigonometric identity for sin(x + y) and sin(x -y). Download video…
@mes
0
11 months ago
MES Science
Derivative of Trigonometric Functions: Derivative of sin(x)
In this video I derive the derivative of sin(x) using the definition of the derivative as well as applying some useful trigonometric identities and limits. Download video…
@mes
0
10 months ago
MES Science
Trigonometry Identities: cos(x +/- y) = cos(x)cos(y) -/+ sin(x)sin(y)
In this video I derive addition and subtraction identities, cos(x+y) and cos(x-y), using the Law of Cosines and the Pythagorean Theorem. This identity is very useful in all of…
@mes
0
10 months ago
MES Science
Trigonometry Identities: sin(-x) = - sin(x) and cos(-x) = cos(x)
In this video I prove the two identities, sin(-x) = - sin(x) and cos(-x) = cos(x), which show that cosine is an even function while sine is an odd function. Download video…
@mes
0
11 months ago
MES Science
Unit Vectors
▶️ Watch on 3Speak In this video I go over unit vectors, which are vectors of length 1.
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