Mathematics, 27.07.2019 20:50 birdwithpurpleboots

Which expression is equivalent to (sin x + 1)(sin x − 1)? a. cos2x b. -cos2x c. cos2x + 1 d. cos2x − 1 e. -cos2x + 1

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Which expression is equivalent to (sin x + 1)(sin x − 1)? a. cos2x b. -cos2x c. cos2x + 1 d. cos...

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