Question 945486
Use sum and difference identities to simplify this expression.
tangent 45 degrees + tangent 5 degrees over quantity 1 minus tangent 45 degrees tangent 5 degrees 
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Identity:{{{tan(x+y)=(tan(x)+tan(y))/(1-tan(x)tan(y))}}}
{{{(tan(45)+tan(5))/(1-tan(45)tan(5))}}}=tan(45+5)=tan(50˚)