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OpenStudy (anonymous):
Prove that 1/cos2x+sin2x = cos2x-sin2x What approach should i use?
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OpenStudy (anonymous):
Rationalizing comes into mind...
OpenStudy (anonymous):
Perhaps some double angle identities.
OpenStudy (anonymous):
This is an equation.
OpenStudy (anonymous):
|dw:1351994546250:dw|
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