Find the Equation of a Sinusoidal Function from a Graph

This video shows the process of finding the equation of a sinusoidal functions if you have a sketch of its graph. Remember that there are many correct answers for the equation of a graph, and you can represent the graph with both a Sine and a Cosine function.

[swaggegg]

i finally found someone who uses degrees!

[harshilshinde]

You explained way better than my university teacher. Loved your video!!!!☺☺☺

[alexgreen]

Thank you for being on this planet <3

[hasanalbanna]

why does everyone have different way to find c, why cant there be a single equation to find c like there is one to find b

[samuelouellet]

subbed and liked cuz now i wont fail my test tyyy

[shirazqasmi]

THANK YOU SO MUCH, BRUH I WAS STUCK ON THIS FOR SO LONG

[هَاشِمِٓيهّْلا]

So basically to find the
SA which is c you do
Max+min divide by 2

And to find the a is
Max-SA

Then to find K is basically trough to trough which then we use 360/k that happens to be the answer k tysm

[lyssn]

There are so many forms used for the sinusoidal function. What form are you using? as in defining it using only variables?

[architech]

Btw, just use the co-function trig identity to find the corresponding trig function for any sinusoid:

sin(x)=cos(π/2 - x)
cos(x)=sin(π/2 - x)

It is worth memorizing the trig identities 🗿

[jsx]

It would've been better if it were in radians. No textbook uses degrees :\