Answer:
89°
Step-by-step explanation:
2t-46+(180-t-43)
t+180-89
t+91=180°
t=89
[tex](t-46)+(t)+(180-(t+43)) = 180\\\\t-46+t+180-t-43=180\\\\t=180-180+46+43\\\\t=89[/tex]
(t-46)+(t)+(180-(t+43)) = 180° because the sum of angles of a triangle is 180°.
