Linda R.

asked • 12/28/19

tan9x-tan5x/1+tan9xtan5x

I got the answer of 4x but not sure what the teacher meant by tangent difference identity but it says to simplify this. I just hope the teacher did not mark me wrong by mistake.

Linda R.

I just wanted to check that answer was right. we have to write everything out like in the books.
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12/28/19

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