Linda R.
asked 12/28/19tan9x-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.
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1 Expert Answer

Stanton D. answered 12/28/19
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Tutor to Pique Your Sciences Interest
No, you wanted tan(4x) . That's quite different than 4x itself!
-- Cheers, -- Mr. d.
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Linda R.
I just wanted to check that answer was right. we have to write everything out like in the books.12/28/19