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What does sin^2 x - cos^2 x equal

What does sin^2 x - cos^2 x equal
asked 107k views
23 votes
What does sin^2 x - cos^2 x equal

asked
User Hardcore
by
8.0k points

1 Answer

11 votes

Answer:

-cos(2x)

Explanation:

I did trig last year and tutor a trig class this year :)

answered
User Makario
by
8.4k points
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