Express the area of an equilateral triangle as a function of the length of a side

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Express the area of an equilateral triangle as a function of the length of a side

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#calculus #exercise #university #college
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Thank you! I was solving the problem using the unit circle, but it was interesting to see it solve algebraically without using trig functions.

briangale
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Yes, please keep doing videos in English, that would be very useful! More people could benefit from that, it doesn't matter if your English is not perfect you are understandable.

b.l.