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Trigonometry
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OpenStudy (thcsbabygirl1224):
Which expression is equivalent to (sin x + 1)(sin x − 1)? cos2x -cos2x cos2x + 1 cos2x − 1 -cos2x + 1
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OpenStudy (thcsbabygirl1224):
@Zale101 @agent0smith @Mokeira @Haseeb96 @Ineedhelplz
OpenStudy (thcsbabygirl1224):
B is correct
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