Solve for x sin(x)+2sin(x)cos(x)=0

Problem

sin(x)+2*sin(x)*cos(x)=0

Solution

1. Factor out the common term sin(x) from the left side of the equation.

sin(x)*(1+2*cos(x))=0

2. Apply the zero product property by setting each factor equal to zero.

sin(x)=0

1+2*cos(x)=0

3. Solve the first equation for x by identifying where the sine function is zero.

x=n*π

where *n* is any integer.

4. Isolate the cosine term in the second equation.

2*cos(x)=−1

cos(x)=−1/2

5. Solve the second equation for x by identifying where the cosine function equals −1/2

x=(2*π)/3+2*n*π

x=(4*π)/3+2*n*π

Final Answer

x=n*π,(2*π)/3+2*n*π,(4*π)/3+2*n*π

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