Four grey regular polygons join together as shown in the diagram. a) Calculate the size of angle a.
+
Note: Finish your answer with a=...
b
b) Calculate the size of angle b.
a
Note: Finish your answer with b=...​

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:

pi x^2

step-by-step explanation:

pi times x squared

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0