Answer:
Step-by-step explanation:
Kindly refer to the image attached in the answer region for labeling of triangle.
<em>AB </em><em>= 16
</em>
<em>BC </em><em>= 19</em>
<em>AC </em><em>= 15
</em>
We have to find the <em>angles </em><em>x</em> and <em>y</em> i.e. 
.
Formula for <em>cosine rule</em>:
Where
<em>a</em> is the side opposite to 
,
<em>b</em> is the side opposite to 
and
<em>c</em> is the side opposite to 
.
Similarly, for finding the value of <em>y:</em>
Hence, the values are:
Answer:
Step-by-step explanation:
The second set. It contains (2,2) and (2,7), so it fails the vertical-line test.
They are congruent angles
If you use the slope formula, the answer is m = 2
The answer would be D. 32
Why? The triangle in the problem is an isosceles triangle. That means the two legs of the triangle are equal and the angle opposite to the equal legs are also equal.
Therefore, angle C is also 74°.
The sum of the interior angles of a triangle is equal to 180°.
Thus,
180° = ∡A + ∡B + ∡C
180° = 74° + ∡B + 74°
180° = 148° + ∡B
∡B = 180° - 148°
∡B = 32°
