2D Rotation

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but why you not finish the matrix on an example for example... man thats one minute and half what the hell, would extra 5 secs be too much to ask ? xd

martinvich
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He really just tell us to ''look it up''....what kind of lazy teaching is this?
Also for those who can't see the dislikes, this video currently has 257 Likes & 113 Dislikes, that's more than 30%

jakewolf
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Perfect Explanation, Thanks!

A lot of people have problems with this video, this vedio is just a quick revision for formulae, and how it can be used, it does not prove it. Talking about proving, few math books actually have proof for formulae inside them. If you know math, you can probably prove it by yourself.

devsp
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This can be proved pretty easily with the sum of sine and cosine formulae.

shubhrajit
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i came for the formula, i got the formula, thanks

turner
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So your explanation to students is to read off a formula for them to memorize ...? Come on man, that helps nobody increase their understanding, not good enough, shame on you.

RD
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Why are some people disliking this? This video is perfectly fine. Perhaps people who are new to math don't know what the "prime" symbol means?

The-cyber-imbiber