matlab怎么解决这个方程等于0时x的值呢,谢谢

题目

matlab怎么解决这个方程等于0时x的值呢,谢谢
(cos(a + x)*cos(c + x)*cos(a - b))/(sin(a + c + d + x)*cos(b + x)*cos(a)^2) - (sin(a + x)*sin(c + x)*cos(a - b))/(sin(a + c + d + x)*cos(b + x)*cos(a)^2) + (cos(c + x)*sin(a + x)*sin(b + x)*cos(a - b))/(sin(a + c + d + x)*cos(b + x)^2*cos(a)^2) - (cos(a + c + d + x)*cos(c + x)*sin(a + x)*cos(a - b))/(sin(a + c + d + x)^2*cos(b + x)*cos(a)^2)

答案