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Algebra problem

 
 
Reply Thu 16 May, 2019 11:04 am
Rewrite with only sin x and cos x. sin 2x - cos 2x
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Type: Question • Score: 0 • Views: 97 • Replies: 1
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engineer
 
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Reply Thu 16 May, 2019 01:25 pm
@Ask a question,
sin 2x = 2 sin x cos x
cos 2x = cos^2 x - sin^2 x

You will need to memorize these for the test.
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