Answer:
d
Step-by-step explanation:
sin 55° = cos 25°
because they complete each other to 90°
Please see the attached pictures for full solution.
12.699
i think if you do 26-22.4, you get the leg of the small triangle which is 3.6
then do Pythagorean theorem
3.6^2 + x^2 = 13.2^2
12.96 +x^2 = 174.24
174.24-12.96
x^2 = 161.28
take square root
x = 12.699
0.192 = 24/125
0.042 = 21/500
189/1000 = 0.189
3/1000 = 0.003
