Page 15 - ePC10410_數學B第二冊_課本PDF

廣義角及其單位 ★ 1-1

1-1.3 同界角

Շࡈᄿ່ԉd߰ՈϞ޴Νٙ始邊ၾ終邊dۆ̴ࡁʝ၈މ同界角fνྡ 4 הͪd

45c ԉၾ 405c ԉʝމΝޢԉd-60c ԉၾ -780c ԉ͵ʝމΝޢԉd˲ 30c ԉၾ -330c

ԉ͵މΝޢԉf

(a) (b) (c)

圖 4

͟׵Νޢԉٙԉܓே݊ɓ዆ਸ਼ɓ዆ਸ਼ٙᄣ̋אಯˇdה˸ՇΝޢԉ̀޴ࢨɓਸ਼

אᅰਸ਼fϾɓਸ਼ה࿁Ꮠٙܓඎ݊ 360cdΪϤՇΝޢԉٙܓඎ差̀މ 360c ٙ዆ᅰ࠴f

͵у

雜 耍
妙錦囊

߰ i ၾ z ʝމΝޢԉdۆ i - z = 360c × n א i - z = 2nrdՉʕdn މ዆ᅰf

͟ɪࠑ̙ٝdɓࡈԉٙΝޢԉϞ͍eϞࠋd˲Ϟೌࠢεࡈf

Է νj600c ٙΝޢԉϞne-840ce-480ce-120ce240ce600ce960cenഃ
ٙΝޢԉf

Չʕd240c މ௰ʃ͍ٙΝޢԉdϾ -120c މ௰ɽٙࠋΝޢԉdɦ 240c ၾ -120c

޴ࢨ 360cdуਗ਼௰ʃ͍Νޢԉ 240c ಯ̘ 360cdу੻௰ɽࠋΝԉ -120cf

͟ɪࠑ̙੻˸ɨഐሞj

5