Answer:
7. 7.8
Step-by-step explanation:
We can use Tan of this angle to find the missing side (in this case, the side adjacent to the angle measuring 57°)
Tan A = (opposite side)/(adjacent side)
Tan 57° = 12/x
solve for x
x(Tan 57°) = 12
x = 12/(Tan 57°)
x = 7.8 (rounded to the nearest tenth)
Show me the answers, then i'll help
Assuming that you’re asking for a fraction of 0.31 where 31 repeats?
31/99
Cosine = adjacent / hypotenuse
cosine = 1 / square root (2)
