Question

-

Answer 1

That is right. But, how did you get it?

Answer 2

37.5 is correct.... it needs a construction for proof... join AC and then its angle angle at the circimference is double the angle at the centre on the same arc to get angle BAC

then angle BCP = 37.5 angle in the alternate segment

Answer 3

all you need to know for intersecting chords the product of the segments are equal

6x = 18*8
6x = 144

x = 144/6

x = 24