matlab里算的:
(3^0.5*i)/(8*((4*5^0.5-10*3^0.5-2*15^0.5+20)^0.5/64 -(6^0.5+2^0.5)*(5^0.5-1)/128 +(-8-3^0.5-15^0.5-(10-20^0.5)^0.5)^0.5/32)^(1/3)) - ((4*5^0.5-10*3^0.5-2*15^0.5+20)^0.5/64-(6^0.5+2^0.5)*(5^0.5-1)/128 +(-8-3^0.5-15^0.5-(10-20^0.5)^0.5)^0.5/32)^(1/3)/2 - 1/(8*((4*5^0.5-10*3^0.5-2*15^0.5+20)^0.5/64-(6^0.5+2^0.5)*(5^0.5-1)/128 +(-8-3^0.5-15^0.5-(10-20^0.5)^0.5)^0.5/32)^(1/3)) - (3^0.5*((4*5^0.5-10*3^0.5-2*15^0.5+20)^0.5/64-(6^0.5+2^0.5)*(5^0.5-1)/128 +(-8-3^0.5-15^0.5-(10-20^0.5)^0.5)^0.5/32)^(1/3)*i)/2
ans =
0.0175 - 0.0000i
就是sin(1°) =0.0175啦,望采纳~