Answer:
Step-by-step explanation:
tan47=x/18
x=18tan47
cosCDB=7/x
cosCDB=7/(18tan47)
CDB=arccos(7/(18tan47))
CDB=68.74
The directrix is y=6 and focus is (0,4)
The equation of the parabola is,
20-4y=x²
40- 40
hope this helps.
16
4x4 = 16
A 75
i did flvs
