I think the answer is C I hope this helps :)
Answer:
55.555555555556%
Step-by-step explanation:
10/18= 0.556
0.5556×100= 55.56%
See the attachments for the answer :)
I think the top one is -cos(a)4/sin(a)2 and the bottom -sin(a)4/cos(a)2. The / means fraction