My Math Forum [Video] The true use of Unit Circle

 Trigonometry Trigonometry Math Forum

 August 18th, 2016, 04:55 PM #1 Newbie   Joined: Mar 2016 From: Datong, China Posts: 11 Thanks: 3 [Video] The true use of Unit Circle Unit circle is just a circle to many, but an extremely useful tool for those who know how to use it. Thanks from Joppy
 August 19th, 2016, 05:43 AM #2 Senior Member   Joined: Feb 2016 From: Australia Posts: 1,791 Thanks: 630 Math Focus: Yet to find out. Hmmmmmmmmmmm.
 August 19th, 2016, 06:44 AM #3 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,640 Thanks: 2624 Math Focus: Mainly analysis and algebra I haven't watched the video, but the image looks like Khan of the eponymous online "academy" had a stroke.
 August 20th, 2016, 11:06 AM #4 Senior Member   Joined: May 2016 From: USA Posts: 1,310 Thanks: 551 I did not watch ALL the video, but its thesis is that most videos on the unit circle are incomplete. That may be so. This video, however, strikes me as being very busy and very fast paced. The narrator has very good spoken English, but it understandably is not perfect British or American English. The admittedly small defects in spoken English compound the problem of fast pace. Based on the approximately 50% I watched, it looks like a fine tool for reviewing the unit circle, but maybe not a great tool for introducing the unit circle. Thanks from Joppy and RedstoneGate
August 20th, 2016, 05:50 PM   #5
Senior Member

Joined: Feb 2016
From: Australia

Posts: 1,791
Thanks: 630

Math Focus: Yet to find out.
My main qualm is things like,

Quote:
 ...We get two triangles with 90 degrees between their hypotenuse,I don't know if you have heard of this, but this three right angle thing is pretty much common sense in China.
I've noticed similar statements and comparisons being said in your other videos also. Personally i think it would be best to eliminate this sort of thing and just focus on the math .

If you think something might warrant further explanation because you believe that some people may not know it, then maybe go off on a small tangent to explain it or something .

But overall good video man, keep it up .

August 20th, 2016, 09:15 PM   #6
Newbie

Joined: Mar 2016
From: Datong, China

Posts: 11
Thanks: 3

Thank you all!

Quote:
 It looks like a fine tool for reviewing the unit circle, but maybe not a great tool for introducing the unit circle.
Indeed. I planned this video as an extension of Unit Circle, so those who watch this are assumed to have learnt the basics of unit circle already.

Quote:
 This video, however, strikes me as being very busy and very fast paced.
Now that someone finally pointed out that I went too fast, I'll stop amplifing my speed next time :P.

 Tags circle, true, unit, unitcircle, video

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