Find the first term and the common difference of the arithmetic sequence whose 5 th term is 3 and 19 th term is 45 .
1 answer:
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Given:
The vertices of ΔWXY are W(-10, 4), X(-3, -1), and Y(-5, 11).
To find:
Which type of triangle is ΔWXY by its sides.
Solution:
Distance formula:
Using distance formula, we get
Similarly,
Now,
So, triangle is an isosceles triangles.
and,
So, triangle is right angled triangle.
Therefore, the ΔWXY is an isosceles right angle triangle.