Final answer:
To find angle B in the triangle with angles A=50 degrees and C=90 degrees, you need to subtract the sum of angles A and C from 180. Therefore, B = 180 - (50 + 90) = 40 degrees.
Step-by-step explanation:
In this geometry problem, with the given that c=10, C=90 degrees, and A=50 degrees, you are trying to find angle B. To find angle B, we will use the fundamental fact that the sum of angles in any triangle is equal to 180 degrees. Therefore, to find angle B, we subtract the known angles A and C from 180. Thus, B = 180 - (A + C) = 180 - (50 + 90) = 40 degrees.
Angle B can be found using the fact that the sum of all angles in a triangle is 180 degrees. Given angles A and C, we can find angle B by subtracting the sum of angles A and C from 180 degrees.
180 - (50 + 90) = 40 degrees
Therefore, angle B is 40 degrees.
Learn more about angles in a triangle