Coordinates will show the vertices of the triangle, and using the vertices, calculate length of the sides of the triangle.With the side length you can now calculate the angles of the triangle.
Step-by-step explanation:
The coordinates of the triangle can be plotted on a graph tool to give you the exact shape.Then using the coordinates that represent vertices for the triangle, apply the distance formula; 
This gives the length of the sides of the triangle.With the side length values, you can apply the cosine rule : c²=a²+b²-2ab cos c to find the angles in the triangle.
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Triangle relationships : brainly.com/question/7722758
Keyword : coordinates, geometry
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Using sin(A+B) = sinAcosB + cosAsinB
sin20cos40 + cos20sin40 = sin(20+40) = sin60degree
=
1 and a half times because 10 goes in to 25 two times but 10 can't go into 25 so you will get 5 left and 10 - 5 is 5 and 5 tenth makes a half so the answer is,
1 and a half times
When two parallel lines are intersected by another straight line, the inner angles are = 180
so (20x+5) + (24x-1) = 180
solve from there
Answer:
t ≥ 2
Step-by-step explanation:
3t ≥ 15-9
3t ≥ 6
t ≥ 6/3
t ≥ 2