is this correct answer??plane trigonometry.?

Question

plz correct if not.

.3..Express each of the following as the same function of a positive acute angle:
a. cos 112° 33’ = ans.-cos 67° 27’
b. tan 310° = ans.-tan 50°
c. cot 138° 15’ 10” = ans.-cot 41° 44’50''
d. sin (-140°) = ans.-sin 40°

Answer 1

Again, when I checked your calculations with my TI-84 Plus Calculator--YOU WERE CORRECT.

Good Luck....