A Right Triangle equals 90 degrees. So the equation would be 90-43=x or 90-43=47. So the missing angle would be 47 degrees
Answer:

Step-by-step explanation:
Given coordinates are (6,-3) and (-5,-4).
![\sf Slope = \frac{y2-y1}{x2-x1}\\\\Slope = \frac{-4+3}{-5-6} \\\\Slope = \frac{-1}{-11} \\\\Slope = \frac{1}{11} \\\\\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Csf%20Slope%20%3D%20%5Cfrac%7By2-y1%7D%7Bx2-x1%7D%5C%5C%5C%5CSlope%20%3D%20%5Cfrac%7B-4%2B3%7D%7B-5-6%7D%20%5C%5C%5C%5CSlope%20%3D%20%5Cfrac%7B-1%7D%7B-11%7D%20%5C%5C%5C%5CSlope%20%3D%20%5Cfrac%7B1%7D%7B11%7D%20%5C%5C%5C%5C%5Crule%5B225%5D%7B225%7D%7B2%7D)
Hope this helped!
<h3>~AnonymousHelper1807</h3>
Answer:
Yes and SSS
Step-by-step explanation:
Let’s write down the ratios to figure out the first question:
RP:MN=5:3
NP:ML=10:6
RN:LN=15:9
Notice that we can simplify all of those ratios to 5:3. That means that the sides are all similar, so yes, the triangles are similar.
For the second question: They are similar by because all sides are similar in the same ratio. That means that they are similar by the SSS similarity.
Hope that helps