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January 28, 2015

January 28, 2015

Posted by **ben** on Sunday, September 5, 2010 at 3:20pm.

- math -
**Reiny**, Sunday, September 5, 2010 at 4:57pmsin 30° = x/10

x = 10sin30° = 5

or

using the ratio of sides of the 30-60-90 triangle

x/1 = 2/10

x = 5

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