SOLUTION: Which expression is equivalent to cos 2 theta for all values of theta:
cos squared theta minus sin squared theta
1 - sin squared theta
cos squared theta minus 1
(2) (si
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cos squared theta minus sin squared theta
1 - sin squared theta
cos squared theta minus 1
(2) (si
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Question 644080: Which expression is equivalent to cos 2 theta for all values of theta:
cos squared theta minus sin squared theta
1 - sin squared theta
cos squared theta minus 1
(2) (sin theta) (cos theta) Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! Which expression is equivalent to cos 2 theta for all values of theta:
cos squared theta minus sin squared theta
1 - sin squared theta
cos squared theta minus 1
(2) (sin theta) (cos theta)
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cos2 theta=cos squared theta minus sin squared theta
cos2x=cos^2x-sin^2x
note: you can find this identity in any trigonometry textbook.
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