Trigonometry Question
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Grade 11 Trigonometry CCSS: HSF-TF.B.5
The brightness of a pulsating star varies periodically. The star completes one full cycle every 10 days. Its brightness ranges from a minimum magnitude of 8.0 to a maximum magnitude of 6.0. Using a sine function B(t), where t is measured in days and the midline is the average brightness, which model is accurate?
- [math]B(t) = sin((π/5)t) + 7.0[/math]
- [math]B(t) = 7.0sin((π/5)t) + 1.0[/math]
- [math]B(t) = 2.0sin((π/5)t) + 7.0[/math]
- [math] B(t) = sin(10πt) + 7.0[/math]
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