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September 16, 2014

September 16, 2014

Posted by **tony** on Monday, June 17, 2013 at 12:40am.

tan 25deg + tan 5deg / 1-tan 25deg tan 5deg

- trig -
**Steve**, Monday, June 17, 2013 at 4:31amtan(x+y) = (tanx + tany)/(1-tanx tany)

so, what you have is

tan(25°+5°) = tan 30° = 1/√3

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