Oblicz wartość wyrażenia me: log(tg181) + log(182) + log(tg183) + ... + log(tg268) + log(tg269)

Aga1.: log(tg181⁰)+log(tg182⁰)+...+log(tg269⁰)=log(tg181¹*..*tg269⁰)= Wskazówka tg181⁰=tg(180⁰+1⁰)=tg1⁰ itd tg269⁰=tg(180+89⁰)=tg89⁰=ctg1⁰ i tgα*ctgα=1 dokończ.