Answer:
a = 7
Step-by-step explanation:
- We know that the angle is 90°, so we can subtract the other known angle measure from 90.
90 - 52 = 38
- Now we know what the other angle's measure is
5a + 3 = 38
5a + 3 = 38
-3 -3
[tex]\frac{5a}{5}[/tex]= [tex]\frac{35}{5}[/tex]
a = 7
