Reference Angle for an Angle, Ex 2 (Using Radians)

[qqtan36]

I like your handwriting lol

[214tato]

how can you graph COS 5pi/3?

[mCamarillo80]

Thanks so f@*&king much

[angelfairylily]

thank you so much.. u r my savior ;A;

[thelolbubble]

Thanks so much! My textbook did not explain this AT ALL. :)

[kiddebo]

dude thankyou sooooooooooooooooooooooooooooo­oooo much, my exam in AFM is next Tuesday and i didnt understand this at all, and now i do.

[patrickJMT]

@kiddebo good luck!

[RealTata01]

Damn! Youtube has EVERYTHING!!! XD

[Esmeralda505]

This was helpful to me! Thank you!

[kizhana]

This is really helpful... Thank u soo much..:D

[zamueli9]

is it possible to be able to do this without memorizing the unit circle?

[reeseepc]

Oh gosh.... Thank you soooo much! I friggin finally understand this now. I've been so confused for a month now. :)

[patrickJMT]

@reeseepc lots of trig and algebra vids, so visit whenever you need a bit of help : )

[bilperli]

Thank you, sir. This was really helpful and explained it better than my text book. :D

[485103]

okay I have a question on this one. Why do you not find the reference angle for c) using -3pi-(-8pi/3). You use 3pi -8pi/3. My ffinal answer for both c) and d) are negative while you have positive. Are we not moving clockwise, giving negative angle measures?

[blaze56765]

@485103 reference angles are always positive

[samusbaker]

Your page is my new bible!

[patrickJMT]

@samusbaker id rather be your new almanac : )

[trekkian88]

fucking thank you!! please pardon my french, but..... THANK YOU!!!!

[patrickJMT]

@trekkian88 no problemo

[Nawafy007]

@patrickJMT at 05:47 , shouldn't you use -3Pi - 2(2/3)Pi instead of 3Pi - 2(2/3)Pi ?

Im confused because on the diagram you wrote -3Pi ….