The equation V + F – 2 = E, relates the number of vertices, faces, and edges in a Platonic solid. Write an equation that makes it easier to find the number of vertices in each of the Platonic solids described:
A) An octahedron (shown here), which has 8 faces.
B) An icosahedron, which has 30 edges.

28

step-by-step explanation:

8+8+6+6

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

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y

=

−

2

find the upper bound of the range.

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y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

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step-by-step explanation: