Trig Functions | Mathematics | Page 1

desert sphinxBOT Jun 13, 2023, 4:15 AM

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sonic mason Jun 13, 2023, 5:47 AM

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What did I do wrong?

lost junco Jun 13, 2023, 6:07 AM

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1-B

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2-A

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cos(A+B)= cos(A)cos(B)-sin(A)sin(B)

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cos(A-B)= cos(A)cos(B)+sin(A)sin(B)

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replace A and B with pi/2 and pi/3 and then look at the question

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i hope this helps 🙂

sonic mason Jun 13, 2023, 8:19 AM

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thanks!

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i found a formula sheet that had all the functions and it makes sense now

golden swallow Jun 14, 2023, 11:32 AM

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.solve

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.solved

desert sphinxBOT Jun 14, 2023, 11:33 AM

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Solved

Post marked as solved by @golden swallow.

Use .unsolved if this was a mistake.

#Trig Functions