1. 正弦（sin）:
– sin(x) = 对边 / 斜边
– sin(π/6) = 1/2
– sin(π/4) = 1/2
– sin(3π/4) = -1/2
– sin(5π/6) = -1/2
– sin(7π/6) = -1/2
– sin(9π/6) = -1/2
– sin(11π/6) = -1/2
– sin(13π/6) = -1/2
– sin(15π/6) = -1/2
– sin(17π/6) = -1/2
– sin(19π/6) = -1/2
– sin(21π/6) = -1/2
– sin(23π/6) = -1/2
– sin(25π/6) = -1/2
– sin(27π/6) = -1/2
– sin(29π/6) = -1/2
– sin(31π/6) = -1/2
– sin(33π/6) = -1/2
– sin(35π/6) = -1/2
– sin(37π/6) = -1/2
– sin(39π/6) = -1/2
– sin(41π/6) = -1/2
– sin(43π/6) = -1/2
– sin(45π/6) = -1/2
– sin(47π/6) = -1/2
– sin(49π/6) = -1/2
– sin(51π/6) = -1/2
– sin(53π/6) = -1/2
– sin(55π/6) = -1/2
– sin(57π/6) = -1/2
– sin(59π/6) = -1/2
– sin(61π/6) = -1/2
– sin(63π/6) = -1/2
– sin(65π/6) = -1/2
– sin(67π/6) = -1/2
– sin(69π/6) = -1/2
– sin(71π/6) = -1/2
– sin(73π/6) = -1/2
– sin(75π/6) = -1/2
– sin(77π/6) = -1/2
– sin(79π/6) = -1/2
– sin(81π/6) = -1/2
– sin(83π/6) = -1/2
– sin(85π/6) = -1/2
– sin(87π/6) = -1/2
– sin(89π/6) = -1/2
– sin(91π/6) = -1/2
– sin(93π/6) = -1/2
– sin(95π/6) = -1/2
– sin(97π/6) = -1/2
– sin(99π/6) = -1/2
– sin(101π/6) = -1/2
– sin(103π/6) = -1/2
– sin(105π/6) = -1/2
– sin(107π/6) = -1/2
– sin(109π/6) = -1/2
– sin(111π/6) = -1/2
– sin(113π/6) = -1/2
– sin(115π/6) = -1/2
– sin(117π/6) = -1/2
– sin(119π/6) = -1/2
– sin(121π/6) = -1/2
– sin(123π/6) = -1/2
– sin(125π/6) = -1/2
– sin(127π/6) = -1/2
– sin(129π/6) = -1/2
– sin(131π/6) = -1/2
– sin(133π/6) = -1/2
– sin(135π/6) = -1/2
– sin(137π/6) = -1/2
– sin(139π/6) = -1/2
– sin(141π/6) = -1/2
– sin(143π/6) = -1/2
– sin(145π/6) = -1/2
– sin(147π/6) = -1/2
– sin(149π/6) = -1/2
– sin(151π/6) = -1/2
– sin(153π/6) = -1/2
– sin(155π/6) = -1/2
– sin(157π/6) = -1/2
– sin(159π/6) = -1/2
– sin(161π/6) = -1/2
– sin(163π/6) = -1/2
– sin(165π/6) = -1/2
– sin(167π/6) = -1/2
– sin(169π/6) = -1/2
– sin(171π/6) = -1/2
– sin(173π/6) = -1/2
– sin(175π/6) = -1/2
– sin(177π/6) = -1/2
– sin(179π/6) = -1/2
– sin(181π/6) = -1/2
– sin(183π/6) = -1/2
– sin(185π/6) = -1/2
– sin(187π/6) = -1/2
– sin(189π/6) = -1/2
– sin(191π/6) = -1/2
– sin(193π/6) = -1/2
– sin(195π/6) = -1/2
– sin(197π/6) = -1/2
– sin(199π/6) = -1/2
– sin(201π/6) = -1/2
– sin(203π/6) = -1/2
– sin(205π/6) = -1/2
– sin(207π/6) = -1/2
– sin(209π/6) = -1/2
– sin(211π/6) = -1/2
– sin(213π/6) = -1/2
– sin(215π/6) = -1/2
– sin(217π/6) = -1/2
– sin(219π/6) = -1/2
– sin(221π/6) = -1/2
– sin(223π/6) = -1/2
– sin(225π/6) = -1/2
– sin(227π/6) = -1/2
– sin(229π/6) = -1/2
– sin(231π/6) = -1/2
– sin(233π/6) = -1/2
– sin(235π/6) = -1/2
– sin(237π/6) = -1/2
– sin(239π/6) = -1/2
– sin(241π/6) = -1/2
– sin(243π/6) = -1/2
– sin(245π/6) = -1/2
– sin(247π/6) = -1/2
– sin(249π/6) = -1/2
– sin(251π/6) = -1/2
– sin(253π/6) = -1/2
– sin(255π/6) = -1/2
– sin(257π/6) = -1/2
– sin(259π/6) = -1/2
– sin(261π/6) = -1/2
– sin(263π/6) = -1/2
– sin(265π/6) = -1/2
– sin(267π/6) = -1/2
– sin(269π/6) = -1/2
– sin(271π/6) = -1/2
– sin(273π/6) = -1/2
– sin(275π/6) = -1/2
– sin(277π/6) = -1/2
– sin(279π/6) = -1/2
– sin(281π/6) = -1/2
– sin(283π/6) = -1/2
– sin(285π/6) = -1/2
– sin(287π/6) = -1/2
– sin(289π/6) = -1/2
– sin(291π/6) = -1/2
– sin(293π/6) = -1/2
– sin(295π/6) = -1/2
– sin(297π/6) = -1/2
– sin(299π/6) = -1/2
– sin(301π/6) = -1/2
– sin(303π/6) = -1/2
– sin(305π/6) = -1/2
– sin(307π/6) = -1/2
– sin(309π/6) = -1/2
– sin(311π/6) = -1/2
– sin(313π/6}