The bases of a cylinder must be polygons.
a. True
b. False

Option B

False

Step-by-step explanation:

A polygon is a plane shape with at least three straight sides. examples include triangles, quadrilaterals, pentagons, etc.

A cylinder has a circular base. A circle as we can tell,  is not a polygon because it has curved edges. As a result of that, we can say that the base of a cylinder does not have to always be a polygon

is there a picture

step-by-step explanation:

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2