Answer:
Step-by-step explanation:
Corresponding parts of congruent triangles are congruent.
So, XY = AB
3a - 3.9 = 1.7a - 1.3
3a = 1.7a - 1.3 + 3.9
3a = 1.7a + 2.6
3a -1.7a = 2.6
1.3a = 2.6
a = 2.6/1.3
a = 2
ΔABC ≅ ΔXYZ
First two letter
AB = XY
Second and third letters
BC = YZ
Third and first letter
CA = ZX
The range to this question in set notation is (-infinity, positive infinity).
The domain and the range are 0 ≤ ∅ ≤ 2π and -1 ≤ cos(∅) ≤ 1, respectively.
<h3>The domain and the range</h3>
The domain is the set of input values i.e. the ∅ values.
On the table, we can see that the ∅ value is from 0 to 2π.
This means that the domain is 0 ≤ ∅ ≤ 2π
On the other hand, the range is the set of output values i.e. the cos(∅) values.
On the table, we can see that the cos(∅) value is from -1 to 1.
This means that the range is -1 ≤ cos(∅) ≤ 1
Hence, the domain and the range are 0 ≤ ∅ ≤ 2π and -1 ≤ cos(∅) ≤ 1, respectively.
<h3>The points on a graph</h3>
See attachment 1
<h3>The graph of the function</h3>
See attachment 2
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