Solve  \; the \;  inequation:  \; sin(x)+abs(sin(x))<=0

step 1

step 2

step 3

f(x) = sin(x)
g(x) = -abs(sin(x))
A = Intersect(f, g, (-6.288703941784639, -0.00551860659312375))
B = Intersect(f, g, (-3.1360740189847407, -0.005518606593124117))
D = Intersect(f, g, (-0.005518634605054362, -0.005518606593125938))
F = Intersect(f, g, (3.1471112881948455, -0.005518606593123873))
H = Intersect(f, g, (6.277666672574532, -0.005518606593126016))
J = Intersect(f, g, (9.430296595374433, -0.005518606593124516))
a = false
b = false
c = false

Tool: Look for X coordinate of point of intersection of two functions (command LookforXcoordinateofpointofintersectionoftwofunctions)
Input: f, g, A
Output: d, D

f(x) = sin(x)
g(x) = -abs(sin(x))
a = OrthogonalLine(A, xAxis)
D = Intersect(a, xAxis)
d = Segment(A, D)