The Triangles Are Similar $\mathrm { T }$ Is $\cos \mathrm { T } \approx 0.766$

The triangles are similar. Find the angle or side that corresponds to the given angle or side in the other triangle.
-For what angle $\mathrm { T }$ is $\cos \mathrm { T } \approx 0.766$ ? (Assume $0 ^ { \circ } \leq \mathrm { T } \leq 90 ^ { \circ }$ .)

A) $36.832 ^ { \circ }$
B) $50 ^ { \circ }$
C) $40 ^ { \circ }$
D) $0.766 ^ { \circ }$