Example: Amplitude and period | Graphs of trig functions | Trigonometry | Khan Academy

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Determining the amplitude and period of a trig function

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Trigonometry on Khan Academy: Big, fancy word, right? Don't be fooled. Looking at the prefix, tri-, you could probably assume that trigonometry ("trig" as it's sometimes called) has something to do with triangles. You would be right! Trig is the study of the properties of triangles. Why is it important? It's used in measuring precise distances, particularly in industries like satellite systems and sciences like astronomy. It's not only space, however. Trig is present in architecture and music, too. Now you may wonder...how is knowing the measurement and properties of triangles relevant to music?? THAT is a great question. Maybe you'll learn the answer from us in these tutorials!

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teach so much better than my teacher i swear

yamiletvazquez
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Before: MUCH CONFUSION WOW FAIL
After: Bless your fricking soul 10/10 don't h8, m8

aerrohero
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What happens to the circle when the period changes?

izentriyt
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Thank you so much! I finally understand pre-calc...

Tamaraalkhateeb
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this was helpful, thank you! p.s., you sound like markiplier

krystiannorthwall
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Thank you very much, very clear and helpful.

DunyaHyuga
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can i ask which of them can save more energy. which of them can last longer

irwinisraeltomas
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How could i solved this one ?! 👉 Y is equal to 2sin x/2 ?

tsukisakata
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What if the period has a fraction in it? For example, y= 2 cos 1/2x

That would make the period 2pi over one half. Help!

vincentr
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The only sinusoids that I know are in my liver.

sarahmchugh
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can i ask which of them can save more energy. which of them can last longer

irwinisraeltomas