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Mathematics 19 Online
OpenStudy (anonymous):

A searchlight rotates through one complete revolution every 4 seconds. How long does it take the light to rotate through 90 degrees? Help me set it up please

OpenStudy (asnaseer):

you know it rotates 360 degrees in 4 seconds so time taken to rotate 90 degrees will be:\[\frac{90}{360}*4\]

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