sin(a-5π)/tan(3π-a)*cot(π/2-a)/tan(a-3π/2)*cos(8π-a)/sin(-a-4π)
问题描述:
sin(a-5π)/tan(3π-a)*cot(π/2-a)/tan(a-3π/2)*cos(8π-a)/sin(-a-4π)
答
sin(a-5π)/tan(3π-a)*cot(π/2-a)/tan(a-3π/2)*cos(8π-a)/sin(-a-4π)