#author("2018-09-02T15:44:27+09:00","","") #author("2018-09-03T16:44:00+09:00","","") [[FrontPage]]¡¡[[kamelink:http://kamelink.com/]] ''²Æ´ü¡¡¿ô³ØIIBÉѽÐ''~ [[¡Ú1¡Û¡Á¡Ú2¡Û»Ø¿ô¡¦Âпô>http://kamelink.com/exam/index.php?%B2%C6%B4%FC%BF%F4%B3%D8IIB%C9%D1%BD%D0%BB%D8%BF%F4%A1%A6%C2%D0%BF%F4]] ~ [[¡Ú3¡Û¡Á¡Ú5¡Û»°³Ñ´Ø¿ô>http://kamelink.com/exam/index.php?%B2%C6%B4%FC%BF%F4%B3%D8IIB%C9%D1%BD%D0%BB%B0%B3%D1%B4%D8%BF%F4]]~ [[¡Ú6¡Û¡Á¡Ú9¡Û¿Þ·Á¤ÈÊýÄø¼°>http://kamelink.com/exam/index.php?%B2%C6%B4%FC%BF%F4%B3%D8IIB%C9%D1%BD%D0%BF%DE%B7%C1%A4%C8%CA%FD%C4%F8%BC%B0]]~ [[¡Ú10¡Û¡Á¡Ú12¡Û¥Ù¥¯¥È¥ë>http://kamelink.com/exam/index.php?%B2%C6%B4%FC%BF%F4%B3%D8IIB%C9%D1%BD%D0%A5%D9%A5%AF%A5%C8%A5%EB]]~ [[¡Ú13¡Û¡Á¡Ú16¡Û¿ôÎó>http://kamelink.com/exam/index.php?%B2%C6%B4%FC%BF%F4%B3%D8IIB%C9%D1%BD%D0%BF%F4%CE%F3&refer=FrontPage]]~ ------ ÌäÂêʸ¤ò''¥¯¥ê¥Ã¥¯''¤¹¤ë¤È²òÅú¤ò¤ß¤ë¤³¤È¤¬¤Ç¤¤Þ¤¹¡¥ ------ #contents **¡Ú3¡Û¡¡2ÇܳѤθø¼°¡¤¹çÀ®¤Î¸ø¼° [#b1ac6591] -2ÇܳѤθø¼° -- $\sin 2\theta=2\sin\theta\cos\theta$ -- $\cos 2\theta=\cos^2\theta-\sin^2\theta=2\cos^2\theta-1=1-2\sin^2\theta$ -»°³Ñ´Ø¿ô¤Î¹çÀ®¤Î¼ê½ç~ ¡ $a\sin\theta+b\cos\theta$ ¤ò $\sqrt{a^2+b^2}$ ¤Ç¤¯¤¯¤ë~ ¢ $\sin\theta$¡¤$\cos\theta$ ¤Î·¸¿ô¤òƱ¤¸³Ñ¤Î $\cos$¡¤$\sin$ ¤ËÃÖ¤¤«¤¨¤ë~ £ ²ÃË¡ÄêÍý¤Ç¼°¤òµá¤á¤ë -- $a\sin\theta+b\cos\theta=\sqrt{a^2+b^2}\sin(\theta+\alpha)$~ ¡¡¡¡¤¿¤À¤· $\cos\alpha=\frac{a}{\sqrt{a^2+b^2}}$¡¤$\sin\alpha=\frac{b}{\sqrt{a^2+b^2}}$ -- $a\sin\theta+b\cos\theta=\sqrt{a^2+b^2}\cos(\theta-\beta)$~ ¡¡¡¡¤¿¤À¤· $\cos\alpha=\frac{b}{\sqrt{a^2+b^2}}$¡¤$\sin\alpha=\frac{a}{\sqrt{a^2+b^2}}$ //3.4-17ÀÄ»³³Ø±¡Â硦¹ñºÝÀ¯·Ð¡¦Ë¡2-1.tex [[&ref(http://kamelink.com/public/2017/3.4-17%E9%9D%92%E5%B1%B1%E5%AD%A6%E9%99%A2%E5%A4%A7%E3%83%BB%E5%9B%BD%E9%9A%9B%E6%94%BF%E7%B5%8C%E3%83%BB%E6%B3%952-1problem.png,nolink,70%,ÌäÂêʸ¤ò¥¯¥ê¥Ã¥¯¤·¤Æ¤ß¤Æ²¼¤µ¤¤¡¥);>http://kamelink.com/public/2017/3.4-17%E9%9D%92%E5%B1%B1%E5%AD%A6%E9%99%A2%E5%A4%A7%E3%83%BB%E5%9B%BD%E9%9A%9B%E6%94%BF%E7%B5%8C%E3%83%BB%E6%B3%952-1.pdf]] ¦Á¤ÏÂè2¾Ý¸Â¡¤¦Â¤ÏÂè3¾Ý¸Â¤Î³Ñ¤Ê¤Î¤Ç¡¤¦Á¡Ü¦Â¤Ï(3¦Ð)/2<¦Á¡Ü¦Â<(5¦Ð)/2¤ÎÈϰϤγѤǤ¹¡¥¤³¤ÎÈÏ°Ï¤Ç sin ¤ÏñĴÁý²Ã¤Ç¤¹¡¥ //3.4-17»³¸ýÂ硦Íý¡¦°å1¡¦¹©¡¦¶µ°é2.tex [[&ref(http://kamelink.com/public/2017/3.4-17%E5%B1%B1%E5%8F%A3%E5%A4%A7%E3%83%BB%E7%90%86%E3%83%BB%E5%8C%BB1%E3%83%BB%E5%B7%A5%E3%83%BB%E6%95%99%E8%82%B22problem.png,nolink,70%,ÌäÂêʸ¤ò¥¯¥ê¥Ã¥¯¤·¤Æ¤ß¤Æ²¼¤µ¤¤¡¥);>http://kamelink.com/public/2017/3.4-17%E5%B1%B1%E5%8F%A3%E5%A4%A7%E3%83%BB%E7%90%86%E3%83%BB%E5%8C%BB1%E3%83%BB%E5%B7%A5%E3%83%BB%E6%95%99%E8%82%B22.pdf]] (1)2ÇܳѤθø¼°¤Î³Îǧ¤Ç¤¹¡¥~ (2)¦Ð/4¡¤¦Á¡¤¦Ð/3¤Îsin ¤Þ¤¿¤Ï cos ¤ÎÃͤÎÂç¾®¤òÈæ³Ó¤·¤Þ¤¹¡¥~ (3)(1)¤¬¤¢¤ë¤Î¤Ç¡¤¤Þ¤º¤Ï¦Ð/6¡¤2¦Â¡¤¦Ð/3¤Îcos¤ÎÃͤÎÂç¾®¤òÍÞ¤¨¤Þ¤·¤ç¤¦¡¥ //3.5-17Ê¡ÅçÂ硦¿Íʸ¼Ò²ñ3-4.tex [[&ref(http://kamelink.com/public/2017/3.5-17%E7%A6%8F%E5%B3%B6%E5%A4%A7%E3%83%BB%E4%BA%BA%E6%96%87%E7%A4%BE%E4%BC%9A3-4problem.png,nolink,70%,ÌäÂêʸ¤ò¥¯¥ê¥Ã¥¯¤·¤Æ¤ß¤Æ²¼¤µ¤¤¡¥);>http://kamelink.com/public/2017/3.5-17%E7%A6%8F%E5%B3%B6%E5%A4%A7%E3%83%BB%E4%BA%BA%E6%96%87%E7%A4%BE%E4%BC%9A3-4.pdf]] sin¡¤cos ¤ò¹çÀ®¤·¤ÆÊÑ¿ô¤ò1¤Ä¤Ë¤Þ¤È¤á¤Þ¤·¤ç¤¦¡¥¤¢¤È¤Ï³Ñ¤ÎÊÑ°è¤ËÃí°Õ¤·¤Þ¤¹¡¥ //3.5-17°ñ¾ëÂ硦¶µ°é10.tex [[&ref(http://kamelink.com/public/2017/3.5-17%E8%8C%A8%E5%9F%8E%E5%A4%A7%E3%83%BB%E6%95%99%E8%82%B210problem.png,nolink,70%,ÌäÂêʸ¤ò¥¯¥ê¥Ã¥¯¤·¤Æ¤ß¤Æ²¼¤µ¤¤¡¥);>http://kamelink.com/public/2017/3.5-17%E8%8C%A8%E5%9F%8E%E5%A4%A7%E3%83%BB%E6%95%99%E8%82%B210.pdf]] y¤Ïx¤Î2¼¡´Ø¿ô¤È¤Ê¤ê¤Þ¤¹¡¥£ø¤Î¤È¤êÆÀ¤ëÃͤÎÈϰϤËÃí°Õ¤·¤Æy¤ÎºÇÂçÃͤȺǾ®Ãͤòµá¤á¤Þ¤¹¡¥ **¡Ú4¡Û¡¡»°³ÑÊýÄø¼°¤Î²ò¤Î¸Ä¿ô [#cf24ba0a] -a,b¤ò¼Â¿ô¤È¤¹¤ë¤È¤¡¤$\cos \theta=a$¡¤$\sin \theta=b$¤òËþ¤¿¤¹¼Â¿ô $\theta$ ¤¬Â¸ºß¤¹¤ë¾ò·ï¤Ï~ ¡¡¡¡$a^2+b^2=1$~ ¤Ç¤¢¤ë¡¥ -»°³ÑÊýÄø¼°¤ò $t=\sin\theta$ ¤ÈÃÖ¤´¹¤¨¤¿¤È¤¤Ï¡¤$t$ ¤È $\theta$ ¤ÎÂбþ´Ø·¸¤Ë¤âÃí°Õ¤¹¤ë¤³¤È¡¥ //3.3-17Áá°ðÅÄÂ硦¥¹¥Ý²Ê2.tex [[&ref(http://kamelink.com/public/2017/3.3-17%E6%97%A9%E7%A8%B2%E7%94%B0%E5%A4%A7%E3%83%BB%E3%82%B9%E3%83%9D%E7%A7%912problem.png,nolink,70%,ÌäÂêʸ¤ò¥¯¥ê¥Ã¥¯¤·¤Æ¤ß¤Æ²¼¤µ¤¤¡¥);>http://kamelink.com/public/2017/3.3-17%E6%97%A9%E7%A8%B2%E7%94%B0%E5%A4%A7%E3%83%BB%E3%82%B9%E3%83%9D%E7%A7%912.pdf]] º¸ÊÕ¤ò¹çÀ®¤·¤Æ¦È¤ò°ì¤Ä¤Ë¤Þ¤È¤á¤Þ¤¹¡¥¹çÀ®¤·¤¿¤È¤¤Î³Ñ¤ÎÈϰϤΤ¦¤Á¦È¤¬2¸Ä¸ºß¤¹¤ëÈϰϤòñ°Ì±ß¤ÎÃæ¤ÇÍÞ¤¨¤Þ¤·¤ç¤¦¡¥ //3.3-17Ê¡²¬Â硦°å2-1.tex [[&ref(http://kamelink.com/public/2017/3.3-17%E7%A6%8F%E5%B2%A1%E5%A4%A7%E3%83%BB%E5%8C%BB2-1problem.png,nolink,70%,ÌäÂêʸ¤ò¥¯¥ê¥Ã¥¯¤·¤Æ¤ß¤Æ²¼¤µ¤¤¡¥);>http://kamelink.com/public/2017/3.3-17%E7%A6%8F%E5%B2%A1%E5%A4%A7%E3%83%BB%E5%8C%BB2-1.pdf]] Í¿¤¨¤é¤ì¤¿ÊýÄø¼°¤Ï sin x=t ¤È¤ª¤¯¤Èt¤Î2¼¡ÊýÄø¼°¤Ë¤Ê¤ê¤Þ¤¹¡¥(1)¤Ït¤ËÂбþ¤¹¤ëx¤Î¸Ä¿ô¤ËÃí°Õ¤·¤Ê¤µ¤¤¤È¤¤¤¦(2)¤Î¥Ò¥ó¥È¤Ç¤¹¡¥ **¡Ú5¡Û¡¡»°³Ñ´Ø¿ô¤Î±þÍÑ [#n764e64b] -»°³Ñ´Ø¿ô¤ÎºÇÂçÃÍ¡¦ºÇ¾®Ãͤεá¤áÊý --(i)¡¡$\sin x$ ¤ä $\cos x$ ¤Ê¤É¤Î1¤Ä¤Î´Ø¿ô¤Ç¼°¤òɽ¤·¡¤ ¼°¤ÎÃÍ°è¤ò $-1\leq \sin x\leq 1$ ¤ä $-1\leq \cos x\leq 1$ ¤ÎÈϰϤǵá¤á¤ë¡¥ --(ii)¡¡$a\sin x+b\cos x$ ¤Ï¹çÀ®¤Î¸ø¼°¤ÇÊÑ¿ô¤ò1¤«½ê¤Ë¤Þ¤È¤á¤ë¡¥ --(iii) ÏÂÀѤθø¼°¡¤ÀÑϤθø¼°¤òÍѤ¤¤Æ1¤Ä¤Î»°³Ñ´Ø¿ô¤Ë¤¹¤ë¡¥ --(iv)¡¡Èùʬ¤òÍøÍѤ¹¤ë¡¥ -ÀÑϤθø¼°~ ¡¡¡¡$\sin \alpha\cos\beta=\frac{1}{2}\{\sin(\alpha+\beta)+\sin(\alpha-\beta)\}$~ ¡¡¡¡$\cos \alpha\sin\beta=\frac{1}{2}\{\sin(\alpha+\beta)-\sin(\alpha-\beta)\}$~ 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