WordPress.com · 2016. 2. 21. · 1+tan2a= cos 1+cot2a= sin (1 cosct — (ct#kr) cosx+l=l) J (2)...

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Transcript of WordPress.com · 2016. 2. 21. · 1+tan2a= cos 1+cot2a= sin (1 cosct — (ct#kr) cosx+l=l) J (2)...