The Answer Is 57.92 But the easiest way to do it is Rounding it
Answer:
NVM MY BAD
x=19
quadrilateral have the internal degree sum of 360
not 365
Using the cosine double angle formula,

(Note I took the positive case since
terminates in the first quadrant)
Using the Pythagorean identity,

(Note I took the positive case since
terminates in the first quadrant)
Answer:
Cf is the answer, Cf is also known as Californium.-
-Seth