What formula should I use? | Mathematics | Page 1

drowsy badge Aug 28, 2024, 1:35 AM

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We're having a lab on sum and difference and while I was looking at this quesiton, I can't find a formula that has sin(A) + cos (B)

left plumeBOT Aug 28, 2024, 1:35 AM

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crisp zenith Aug 28, 2024, 2:00 AM

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$$ \cos{200} = \sin{290} $$

silk ploverBOT Aug 28, 2024, 2:00 AM

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Latias

drowsy badge Aug 28, 2024, 2:02 AM

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What?

crisp zenith Aug 28, 2024, 2:08 AM

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$$\cos x = \sin(90 + x)$$

silk ploverBOT Aug 28, 2024, 2:08 AM

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Latias

crisp zenith Aug 28, 2024, 2:08 AM

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Use this to convert the cos term into a sine one

drowsy badge Aug 28, 2024, 2:20 AM

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Ohhh I see now

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And then we use the sin(x) + sin(x) formula

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Wait but why a cofunction tho?

#What formula should I use?