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  • [°­ÀÇ]»ï°¢ÇÔ¼ö Áú¹®ÀÌ¿ä
  • 2020-01-20
12¹ø¿¡ ¼±ºÐ OPÀÇ ±æÀÌ°¡ 17ÀΰÍÀº ¾Ë°Ú½À´Ï´Ù.±×·±µ¥ sin, cos, tanÀÇ ±æÀÌ´Â ¿Ö °¢°¢ -15/17, -8/17, -15/8·Î ³ª¿À´ÂÁö ¸ð¸£°Ú½À´Ï´Ù. ¾Ë·ÁÁÖ¼¼¿ä. ¼±»ý´Ô. 


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  • 2020-01-21
 
 
Á¡ P(-8, 15)¿¡¼­ xÃà¿¡ ³»¸° ¼ö¼±ÀÇ ¹ßÀ» Q¶ó°í ÇÒ ¶§ 
»ï°¢ÇÔ¼öÀÇ °ªÀº ´ÙÀ½°ú °°½À´Ï´Ù. 
 
sin¥è = PQÀÇ ±æÀÌ / OPÀÇ ±æÀÌ 
cos¥è = - OQÀÇ ±æÀÌ / OPÀÇ ±æÀÌ 
tan¥è = - PQÀÇ ±æÀÌ / OQÀÇ ±æÀÌ 
 
(´Ü, ¥è°¡ 2»çºÐ¸éÀÇ °¢À̹ǷΠsin¥è>0, cos¥è<0, tan¥è<0 ) 
 
µû¶ó¼­ 
sin¥è = 15/17, cos¥è = - 8/17, tan¥è = - 15/8  
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