(1)x=arcsin(2/5) ,(x属於[-π/2,π/2])
(2)x=arcsin(-1/3) ,(x属於[-π/2,π/2])
(3)x=arcsin(0.3417) ,(x属於[-π/2,π/2])
(4)x=arcsin(-根号3/4) ,(x属於[-π/2,π/2])
这些都是直接写答案,不需要过程,也没有过程.
(1)x=arcsin(2/5) ,(x属於[-π/2,π/2])
(2)x=arcsin(-1/3) ,(x属於[-π/2,π/2])
(3)x=arcsin(0.3417) ,(x属於[-π/2,π/2])
(4)x=arcsin(-根号3/4) ,(x属於[-π/2,π/2])
这些都是直接写答案,不需要过程,也没有过程.