The Cosine Law - Nerdstudy

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What is the cosine law and how can we use it to solve problems? Let's learn all about it in this video!

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I really appreciate how elaborate the explanation is, mixed with graphics that really shows the procedure.

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Thanks you made me understand this in 2 minutes while my teacher was explaining it for 30 mins and half the class didnt understand

[@thesnackbandit]

Half the class didn't understand the cosine rule? Really?

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@@thesnackbanditmy class didn’t understand, we are a bunch of 8th graders 😂

[@thesnackbandit]

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[@allycrossingcloud]

I tried to teach myself this for an upcoming test as we never learned it in class and I’ve pretty much got it, just need to review it a few more times as I’m kinda bad at making stuff stick in. Thankyou for the help!

[@Nerdstudy]

Glad that we could help!

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The pacing is often too slow in these kinds of videos. This is great.

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Well done. Straight forward, clear, under 10 mins, good examples and graphics.

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Thank you so much, this was the first video that explained everything I needed to know in a way I could understand!

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Just discovered this today. You explained it in such a simple way and I appreciate the video!

[@lessgoo7208]

Loved the video! I have a question though. For 5:20 shouldn't the third formula be c^2 = a^2 + b^2..., instead of c^2 = a^2 + a ^2....?

[@JohnSNagy]

yup

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[@NickEnchev]

Awesome! I know it doesn't matter, but is there any reason why you chose to plug c for a and a for c into the equation at 4:15?

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What video software do you use?

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I enjoyed it, thanks. Understood some

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[@ukilectric]

if you have the length of two sides and the angle which they form then a more accurate theorem would be tangent

[@Zoccy_]

Thanks man

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[@kalvintine]

how did you get 150.22? i get it up till that point

[@pjwlk]

I got ~ 170.1309 SQRT of that came to 13.04342

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Thank u 🥰🥰🥰

[@Nerdstudy]

No problem! and thank you too!

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[@mikezilberbrand1663]

Can you explain the rounding rule for law of cos? Should we go by sig digits or by decimals?

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can you pls solve a triangle given only one side ang have no angle using heron's formula? pretty pls🙏

[@garynonaka2475]

In the C^2 = form, did you mean a^2 + b^2 - 2ab Co's C? Thank you.

[@Sithlordowen]

I wish you did a example of CosC but otherwise this was perfect

[@vortx3192]

Thanks so much!!

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[@johndaleignacio914]

Why to add 113 both sides? 4:32

[@ConfusedWonkie]

all i can say is thank you so muchhhhh!!!!!!

[@zed90_OW]

How did you get 150.22

[@cactusthingsdaily7552]

There's a typo on 5:18, the last equation should read c^2=a^2+b^2-2ab Cos (C°)

[@nancyfring2093]

THANNNNKKYOOOU!

[@Nerdstudy]

No problem! Hope you learned a lot!