SOLUTION: Sorry. Last one was screwed up. sinx/sinx+cosx = tanx/1+tanx

Question 95717: Sorry. Last one was screwed up.

sinx/sinx+cosx = tanx/1+tanx
Answer by bucky(2189) (Show Source): You can put this solution on YOUR website!
Given:
.

.
Use the identity:
.

.
and on the right side substitute for to get:
.

.
The denominator contains 1. Replace 1 with an equivalent to make the equation
become:
.

.
Notice now that the two terms in the denominator both have the common denominator
of . Because they have the common denominator their numerators can be added over
that common denominator to get:
.

.
Note that on the right side you are dividing by the fraction
To divide by a fraction you can invert the fraction and multiply. This converts the problem
to:
.

.
On the right side cancel the terms in the denominator and numerator:
.

.
Notice that with this set of cancellations the right side now equals the left side of
the equation. Therefore, the original problem has been proven.
.
Hope this helps you to understand trig a little better.
.
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