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Is there way to simplify this? http://imgur.com/a/TiyPfUN

 Aug 17, 2019
 #1
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+1

Since 1 - tan2 x is the difference of two squares, it factors into (1 - tan x)(1 + tan x).

Since the denominator is tan x + 1 and that is the same as (1 + tan x), those two factors will be "canceled."
The remaining term in the numerator, 1 - tan x, is the simplified form of this fraction.

 Aug 18, 2019

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