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Trigonometry
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OpenStudy (anonymous):
sec3x-cos3x/secx-cosx=sec2x+1+cos2x does anyone know how to prove this?
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OpenStudy (anonymous):
you can draw a line down the middle where the equal sign is to separate it. then you can start changing things based on the identities. for example you can always move sec3x to the denominator since it is 1/cosx
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