Letter D
A = 135°
B = 30°
cosAcosB - sinAsinB = cos(A+B)
cos(135°+30°)
cos(165°)
The correct statements about similarity of triangles are A, B, and C.
<h3>
What is a similar triangle?</h3>
Similar triangles are triangles that have the same shape, but their sizes may vary. This type of triangles are said to have congruent angles and corresponding sides.
From the given figure,
- triangle ABC is a right triangle and triangle BDC is also a right triangle
- triangle ABC is a right triangle and triangle ADB is also a right triangle
- angle ABD is 45 and angle BCD is also 45 degrees.
Thus, the correct statements about similarity of triangles are A, B, and C.
Learn more about similar triangles here: brainly.com/question/2644832
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I'm a little unsure about this one, but I believe that scale factor is the rule that yields dilution, as it specifies how the diluted figure is placed on the graphing plane.
An easy way to find an endpoint when the midpoint is given is to simply count the distance from the given endpoint to the midpoint, and go that distance from the midpoint in the opposite direction of the other endpoint. Using your problem as an example:
The y value doesn't change, so we only need to worry about x.
From 1 to -4, you go left 5 (-4 - 1 = -5). So, do that again, and you get -9.
Therefore, the coordinates of the other endpoint are (-9, -2), or B.
<em>Hope this helps! :)</em>
4, 2, -x ^, -x it goes from the highest number then letter with any sign attached
