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Ilya [14]
3 years ago
15

Use the trigonometric subtraction formula for sine to verify this identity: sin((π / 2) – x) = cos x

Mathematics
1 answer:
KIM [24]3 years ago
4 0

Answer:

Step-by-step explanation:

sin (\frac{\pi}{2} - x) = cos x \\\\ sin (a - b) = sin a.cos b - sin b.cos a \\\\ sin (\frac{\pi}{2} - x) = sin \frac{\pi}{2}.cos x - sin x.cos \frac{\pi}{2} \\\\ sin \frac{\pi}{2} = 1; cos \frac{\pi}{2} = 0 \\\\ sin (\frac{\pi}{2} - x) = 1.cos x - sin x.0 \\\\ sin (\frac{\pi}{2} - x) = cos x

I hope I helped you.

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Andru [333]

Answer:

It's negative correlation, I took the test before going on summer break so I hope this helps <3 If you have anymore questions please feel free to ask!

8 0
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An after school music program has 15 out of 50 students participating. Write 1550 as a decimal and as a percent. Decimal- Percen
yarga [219]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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Step-by-step explanation:

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