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#trigonometry
Trending Posts
@mes
0
about 1 year 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
about 1 year 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
about 1 year 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
about 1 year 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
about 1 year 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
about 1 year ago
MES Science
Trigonometry: Proof of Law of Cosines (and Pythagorean Theorem)
In this video I show a simple geometric proof of the cosine law. This is very useful in real world applications. Also from the proof of the cosine law you can easily proof the…
@mes
0
11 months ago
MES Science
Inverse Trigonometric Functions: Inverse Cosine, Sine, and Tan Functions
This video demonstrates how to get the inverse functions for the most common trigonometric functions in cosine, sine, and tan functions. Trigonometric functions are not one to…
@mes
0
11 months ago
MES Science
Inverse Functions Part 2: One to One Functions and the Horizontal Line Test
In this video I clarify the inverse functions in which I defined in my earlier video to state that it is only applicable to one to one functions. This requirement is illustrated…
@mes
0
9 months ago
MES Science
Problems Plus 1: 15th Derivative of sin(x^3) at x = 0
▶️ Watch on 3Speak In this video I go over Problem 1 which asks us to determine the 15t
@mes
0
about 1 year 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…
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