3 years ago

Ocean waves are hitting a beach with a frequency of 0.100 Hz. Their average wavelength is 15.0 m. What is their average speed?

Mathematics

1 answer:

dalvyx [7]3 years ago

7 0

Answer:

7 mph or 11.27 kphe

Step-by-step explanation:

Im pretty sure pls give 5 stars

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Step-by-step explanation:

Given: $\sin\theta = \dfrac{1}{3}$

$0\leq \theta \leq \dfrac{\pi}{2}$

Theta lie in first quadrant.

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2theta lie in I and II quadrant.

$\tan2\theta$ is positive in I and negative in II quadrant.

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$\sin2\theta=2\cdot \dfrac{1}{3}\cdot \dfrac{2\sqrt{2}}{3}=\dfrac{4\sqrt{2}}{9}$

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$\tan2\theta=\pm\dfrac{4\sqrt{2}}{7}$

Hence, The value of $\tan2\theta=\pm\dfrac{4\sqrt{2}}{7}$

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