What is cos 23? I’m confused For some reason

Answer:
B.
Step-by-step explanation:
cos 23 = adjacent side / hypotenuse
= 12/13.
Answer:
B
Step-by-step explanation:
Just put cos23 in your calculator then (=)
and finally press (S-D)
Save this answer(on sheet or paper) and check these answers by putting in your calculator each other and (S-D).