三角函数值列个表给我.谢

给你两个表,第一个是5°至360°每隔5°的角的正弦、余弦、正切、余切函数的高精度近似值。第二个是0°、15°、18°、30°、36°、45°、54°、60°、72°、75°、90°这些角的正弦、余弦、正切函数精确值的数学表达式。其他角的三角函数精确值的数学表达式一般极其复杂,故未收录。90°以上角的三角函数可借助此表用诱导公式求出。关于第二个表的注释：“sqrt(x)”表示x的算术平方根,“/”表示除号。以下是第二个表：sin0° = 0; cos0° = 1; tan0° = ∞;sin15° = [sqrt(6)-sqrt(2)]/4; cos15° = [sqrt(6)+sqrt(2)]/4;tan15° = 2-sqrt(3);sin18° = [sqrt(5)-1]/4; cos18° = sqrt[10+2*sqrt(5)]/4;tan18° = {3*sqrt[50+10*sqrt(5)]-5*sqrt[10+2*sqrt(5)]}/20;sin30° = 1/2; cos30° = sqrt(3)/2;tan30° = sqrt(3)/3;sin36° = sqrt[10-2*sqrt(5)]/4; cos36° = [sqrt(5)+1]/4;tan36° = {sqrt[50-10*sqrt(5)]-sqrt[10-2*sqrt(5)]}/4;sin45° = sqrt(2)/2; cos45° = sqrt(2)/2;tan45° = 1;sin54° = [sqrt(5)+1]/4; cos54° = sqrt[10-2*sqrt(5)]/4;tan54° = {3*sqrt[50-10*sqrt(5)]+5*sqrt[10-2*sqrt(5)]}/20;sin60° = sqrt(3)/2; cos60° = 1/2;tan60° = sqrt(3);sin72° = sqrt[10+2*sqrt(5)]/4; cos72° = [sqrt(5)-1]/4;tan72° = {sqrt[50+10*sqrt(5)]+sqrt[10+2*sqrt(5)]}/4;sin75° = [sqrt(6)+sqrt(2)]/4; cos75° = [sqrt(6)-sqrt(2)]/4;tan75° = 2+sqrt(3);sin90° = 1; cos90° = 0;tan90° = ∞;