Answer:
43°
Step-by-step explanation:
A triangle has a total angle of 180° and we can use it to find the answer.
The attachment is a visualization of the triangle.
In order to find angle T, we can use the triangle formula to find t.
[tex] {180}^{o} = r + s + t[/tex]
By substituting r and s, we will get
[tex] {180}^{o} = {85}^{o} + {52}^{o} + t[/tex]
Hence, we can find T, which is
[tex]t = {180}^{o} - {85}^{o} - {52}^{o} = {43}^{o} [/tex]