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A searchlight revolving once each minute is located at a distance of 1/4 mile from a straight beach. How fast is the light moving along the beach when the beam makes an angle of 60° with the shore line?
9 years ago

Answers

Steve
x/(1/4) = tanθ

4 dx/dt = sec^2θ dθ/dt

now just plug in your numbers. Careful with the units.
9 years ago
Sandra
Thank you so much Sir!
9 years ago

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