Sketching Sinusoidal Functions from an Equation

[@ramzeez1625]

mr james back with another banger

[@tylerhaughton5930]

Yea I’m gonna fail

[@pakistanicanadianvlogger]

🤣

[@valencehockey1668]

Us both gang 😭😭 🙏🙏

[@hyvalaxy8900]

Did u fail

[@tylerhaughton5930]

@@hyvalaxy8900 nah I cheated

[@yeny7194]

I was told to always divide the period by 4, is that wrong? where did you get 90 degrees from? Thanks!

[@MrJamesMath]

Dividing the period by 4 also works. Using 90/|k| works because one quarter of the period of a plain sine or cosine function is 90. As such, if you horizontally stretch or compress a plain sine or cosine function then the horizontal interval that represents one quarter of the period will change.
Try it for yourself. Take a transformed sinusoidal function, determine its period and divide by 4. Then try calculating 90/|k|. You should get the same number!

[@Alhussainba]

THANK YOU MR. JAMES

[@hadeel6067]

I didn't get how we did the period onee??

[@zainabkhan-oh2iq]

thanks!!!🎉

[@pakistanicanadianvlogger]

why isn;t the minimum -3?

[@carlllhyarda4322]

1 - 2 = -1

[@r4robin33]

g0d

[@beast9073]

Yeah im cooked

[@wifi.scholar]

😭