#geometry

16 messages · Page 1 of 1 (latest)

long sonnet Jun 5, 2024, 2:23 PM

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how do you go from cos(a) +1 to 2cos^2(a/2)?

coarse tokenBOT Jun 5, 2024, 2:23 PM

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wild cedar Jun 5, 2024, 2:24 PM

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Do you know half angle identity?

long sonnet Jun 5, 2024, 2:24 PM

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yep

wild cedar Jun 5, 2024, 2:25 PM

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Then where is confusion?

long sonnet Jun 5, 2024, 2:26 PM

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I just dont understand what they do with the +1

wild cedar Jun 5, 2024, 2:27 PM

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There’s a plus one in the identity

long sonnet Jun 5, 2024, 2:28 PM

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ohhhh

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but why is it squared?

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omg im blind

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forgive my y stupidness

wild cedar Jun 5, 2024, 2:29 PM

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Stupidness?

long sonnet Jun 5, 2024, 2:30 PM

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me being stupid* hahaha

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welp thx!

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.solved