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Mathematics, 29.11.2019 10:31 andersonrocksc
Prove tan(pi/4 x) - tan(pi/4-x)/tan(pi/4 x) tan(pi/4-x)=2sinxcosx
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Prove tan(pi/4 x) - tan(pi/4-x)/tan(pi/4 x) tan(pi/4-x)=2sinxcosx...
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