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16. To the nearest second, what is the first time after 7 that the hand of a clock form a right angle?

 Nov 27, 2022
edited by Guest  Nov 27, 2022
 #1
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The ansewr is 7:22:35.

 Nov 27, 2022
 #2
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90=abs((30*7) - (5.5*M)), solve for M

 

M==240 / 11 ==21.818181.........etc. minutes after 7:00 O'clock.

 

90 degrees==7:21.818181...........etc.

 Nov 27, 2022

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