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互余角的關(guān)系 sin( - )=cos , cos( - )=sin , tan( - )=cot , cot( - )=tan .
2023-01-19
銳角三角函數(shù) 銳角三角函數(shù)定義: 銳角角A的正弦(sin),余弦(cos)和正切(tan),余切(cot)以及正割(sec)，余割(csc)都叫做角A的銳角三角函數(shù)。 正弦(sin)：對(duì)邊比斜邊，即sinA=a/c 余弦(cos)：鄰邊比斜邊，即cosA=b/c
2023-01-19
sin cos tan相關(guān)方程式 1.數(shù)關(guān)系 tan cot =1 sin csc =1 cos sec =1 2.商的關(guān)系 tan =sin /cos cot =cos /sin 3.平方關(guān)系 sin2 +cos2 =1 1+tan2 =sec2 1+cot2 =csc2 4.積化合差公式 sin cos =(1/2)*[sin( + )+s
2023-01-19
特殊角函數(shù)值表圖
2023-01-19
sin(281 )=-0.981627,cos(281 )=0.190809,tan(281 )=-5.144554 sin(282 )=-0.978148,cos(282 )=0.207912,tan(282 )=-4.704630 sin(283 )=-0.974370,cos(283 )=0.224951,tan(283 )=-4.331476 sin(284 )=-0.970296,co
2022-09-19
sin(281 )=-0.981627,cos(281 )=0.190809,tan(281 )=-5.144554 sin(282 )=-0.978148,cos(282 )=0.207912,tan(282 )=-4.704630 sin(283 )=-0.974370,cos(283 )=0.224951,tan(283 )=-4.331476 sin(284 )=-0.970296,co
2022-09-19
sin(281 )=-0.981627,cos(281 )=0.190809,tan(281 )=-5.144554 sin(282 )=-0.978148,cos(282 )=0.207912,tan(282 )=-4.704630 sin(283 )=-0.974370,cos(283 )=0.224951,tan(283 )=-4.331476 sin(284 )=-0.970296,co
2022-09-19
sin(281 )=-0.981627,cos(281 )=0.190809,tan(281 )=-5.144554 sin(282 )=-0.978148,cos(282 )=0.207912,tan(282 )=-4.704630 sin(283 )=-0.974370,cos(283 )=0.224951,tan(283 )=-4.331476 sin(284 )=-0.970296,co
2022-09-19
sin(201 )=-0.358368,cos(201 )=-0.933580,tan(201 )=0.383864 sin(202 )=-0.374607,cos(202 )=-0.927184,tan(202 )=0.404026 sin(203 )=-0.390731,cos(203 )=-0.920505,tan(203 )=0.424475 sin(204 )=-0.406737,co
2022-09-19
sin(201 )=-0.358368,cos(201 )=-0.933580,tan(201 )=0.383864 sin(202 )=-0.374607,cos(202 )=-0.927184,tan(202 )=0.404026 sin(203 )=-0.390731,cos(203 )=-0.920505,tan(203 )=0.424475 sin(204 )=-0.406737,co
2022-09-19
sin(201 )=-0.358368,cos(201 )=-0.933580,tan(201 )=0.383864 sin(202 )=-0.374607,cos(202 )=-0.927184,tan(202 )=0.404026 sin(203 )=-0.390731,cos(203 )=-0.920505,tan(203 )=0.424475 sin(204 )=-0.406737,co
2022-09-19
sin(201 )=-0.358368,cos(201 )=-0.933580,tan(201 )=0.383864 sin(202 )=-0.374607,cos(202 )=-0.927184,tan(202 )=0.404026 sin(203 )=-0.390731,cos(203 )=-0.920505,tan(203 )=0.424475 sin(204 )=-0.406737,co
2022-09-19
sin(141 )=0.629320,cos(141 )=-0.777146,tan(141 )=-0.809784 sin(142 )=0.615661,cos(142 )=-0.788011,tan(142 )=-0.781286 sin(143 )=0.601815,cos(143 )=-0.798636,tan(143 )=-0.753554 sin(144 )=0.587785,cos
2022-09-19
sin(141 )=0.629320,cos(141 )=-0.777146,tan(141 )=-0.809784 sin(142 )=0.615661,cos(142 )=-0.788011,tan(142 )=-0.781286 sin(143 )=0.601815,cos(143 )=-0.798636,tan(143 )=-0.753554 sin(144 )=0.587785,cos
2022-09-19
sin(141 )=0.629320,cos(141 )=-0.777146,tan(141 )=-0.809784 sin(142 )=0.615661,cos(142 )=-0.788011,tan(142 )=-0.781286 sin(143 )=0.601815,cos(143 )=-0.798636,tan(143 )=-0.753554 sin(144 )=0.587785,cos
2022-09-19
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