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klinh1999hn


1. $\sqrt{2}sin2x(sinx+cosx)= 2$
2. $\sqrt{2}(sinx+cosx)=tan+cotx$
3. $sin^3x + cos^3x= 2sinxcosx+sinx+cosx$
2. $\sqrt{2}(sinx+cosx)=tan+cotx$
3. $sin^3x + cos^3x= 2sinxcosx+sinx+cosx$
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