PreCalculus - Polar Coordinates (15 of 35) Graphing Polar Equations: r=3cos3(theta), Roses

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In this video I will graph polar equation r=3cos(theta), r=3cos3(theta), r=3cos5(theta), r=3cos7(theta), roses.
Next video in the polar coordinates series can be seen at:
• PreCalculus - Polar Co...

[@mohsenamini3297]

Thanks Michael for your contribution. You are a professional instructor, detail oriented. You already draw everything on the board, so you do not waste time drawing. You get all the instructions delivered in a few minutes......thanks again.

[@manby2449]

thank youuu
my professor is really good at teaching but during this unit I was going through so much emotional stuff I couldnt pay attention, Im still recovering but my test is tomorrow! so i cannot thank you enough, i wish you can get profit out of these videos!

[@MichelvanBiezen]

Glad you found our videos and you are able to catch up.

[@SunandMoon7-7]

thank you very much big THANK YOU clear explaination, btw anyone 2024?

[@MichelvanBiezen]

You are welcome.

[@mn-yv2ur]

Thank you for sharing your knowledge and skills with us. I love your explanation, it's so easy to understand. My math teacher should watch your videos and learn how to teach.

[@vanshbirju6367]

thanks .....its really really helpful....appreciate your effort....

[@MichelvanBiezen]

Glad it was helpful!

[@azoozfahol392]

I respect you sir very much... you made this lesson so easy to me

[@Attalla-t9b]

Great explanation!

[@MichelvanBiezen]

Glad you think so!

[@Sandile_826]

feels good to finally understand this 👌👌👌👌👌👌👌👌

[@MichelvanBiezen]

Great. Glad you found our videos. 🙂

[@aritra1934]

Gem of a video.

[@MichelvanBiezen]

Thank you. Glad you liked it. 🙂

[@jianqinggao4167]

A very nice strategy mentioned in the video.

[@MichelvanBiezen]

Glad it was helpful!

[@bnyaminsabah]

Thanks master finally I understood 🕶️

[@MichelvanBiezen]

Great! Glad you found our videos.

[@sahriarsumaia1572]

May allah bless you sir, thanks from Bangladesh

[@MichelvanBiezen]

Thank you. Welcome to the channel.

[@skye-chor]

Efficient teaching! Thanks so much

[@MichelvanBiezen]

Much appreciated.

[@orangesss3]

oml thank you i can stop crying now

[@jasmineding4162]

hi i am just wondering does it mean for r=acos3theata it would be 360/3 to find location of first petal and a petal every 120 degrees whilst for r=asin3theata it would be 90/3 to find the location of first petal and then 360/3 that theres a petal every 120 degree? thank you so much these videos are so helpful

[@MichelvanBiezen]

That is a good way of putting it. Did you see video # 16 in the playlist?

[@michelef406]

You did a really good job explaining the pattern, but there's something about the frame of reference that is messing me up badly.
At 5:10 you can see that for teta = 120 the value of r is equal to -3. How can we say that a radius in the top left quadrant is negative? Which is the convention underpinning a polar plane graph?

[@MichelvanBiezen]

If r is negative in polar coordinates, then you simply draw the point in the opposite direction (add 180 degrees)

[@michelef406]

@@MichelvanBiezen Shouldn't I draw the point in the 4th quadrant then? 120 + 180 = 300 that's why I can't get this

[@shikhargupta6626]

Why do my Math and Physics teacher make me watch the same guys videos 😂

[@morganfreeman544]

Calculus be like

[@jarelmontes7583]

On the last one, where did that 13 degrees come from ??

[@MichelvanBiezen]

When theta = 13 (12.85) degrees, 7 x 12.85 = 90 degrees cos (90) = 0

[@TacTzGaming]

360 degrees and 0 degrees do not equal each other (aren't the same angle) they have the same terminal point

[@Itaaugusto]

Nossa adorei sua explicação. vc é muito bom, parabens

[@Bearfair]

what determines the width of the leaves?? and thank you for your lectures

[@MichelvanBiezen]

When you plot points (like you do with an x-y graph), using the r and theta coordinates the shapes are an automatic result of the relationship between r and theta of the function being graphed.

[@Bearfair]

so if i understood that correctly, I should divide the theta by 4 and that will tell me the width right?

[@MichelvanBiezen]

Now I understand the question. Finding the width (in angle) can be tricky. There are several examples in the playlist that show you how to do that. (The width depends on the number of leafs).

[@Bearfair]

oh alright.. ill check them out, thank you

[@sajadomran548]

شكراً

[@ntsikammiwa6436]

thank you do much, this was so confusing

[@MichelvanBiezen]

Glad it was helpful. 🙂

[@dishame4853]

شكرا ⁦❤️⁩⁦❤️⁩

[@fantasiworld5721]

Sir what is the difference between rose 1 or rose 2

[@joseignaciomoya6463]

so thankful

[@mattae2037]

Thank you

[@kingsleymbre9195]

thanks a lot

[@MichelvanBiezen]

Happy to help

[@braveboy1million908]

My professor is a young kind of atractive woman but only if she taught like you. I would choose you over her.

[@herahapelo1981]

Murr's worst punishment yet 😆

[@gersantru]

Beautiful! Thanks!

[@siphilipe]

Few tutors say why? ex:(51.4/4), and (72/2) and briefly respond because..., Additionally, it looks like "draw that rose BUT without lifting a marker." LOL

[@fantasiworld5721]

Sir how we find to draw 3 or 5 petal

[@mesutbakhtyari]

Thanks alot man

[@vamsir3633]

Very interesting

[@wilfordmadyira1898]

thanks man.

[@alejandroguerra6755]

Thank you!

[@michaelkast.5016]

δεν βγαινει auth χωρις αυτο

[@ΠαναγιώτηςΔημητσακης]

που να βγει φιλαρακι

[@ΠαναγιώτηςΔημητσακης]

Χρονια πολλα Δαναη

[@michaelkast.5016]

@@ΠαναγιώτηςΔημητσακης Να τα εκατοστήσεις!!

[@michaelkast.5016]

Δαναη*

[@teriyakichicken9969]

Δε βγαίνει όντως μάγκες
Χρόνια πολλά Δανάη

[@johnbatchler8551]

This is covered under sacred geometry drawing

[@YouTube걸출]

thx very much :)

[@mual_ba]

ㄷㄷ

[@hmeyku6759]

عربية👋

[@Mittenssss]

thank you sir :)

[@cristianrivera383]

No entiendo ni mrd xd

[@sgd9700]

cany divide 360 by 7 without a calculator? loool

[@arnavahuja310]

stfu u cant either headass