I include the lession example, for the small angle I can do no problem , but for big number I can solve
In circle C, point T is randomly selected so that it does not coincide with point P, segment SQ is a diameter of circle C.
1)Find the probability that m

Question

I include the lession example, for the small angle I can do no problem , but for big number I can solve
In circle C, point T is randomly selected so that it does not coincide with point P, segment SQ is a diameter of circle C.
1)Find the probability that m <STQ = 90
2)Find the probability that m <PTQ = 180
The example lession is:
Point A and B are on cicrle so that art mAB=60 degree ,D is random located on the same circle that is not coincide with A or B. What is the probability of m<ADB=30degree?
arcmBDA=360- arcmAB
= 360-60=300
Sin <ABD must intercept arc AB the probability that m<ADB =30 is

anonymous · Answer

look like limiting word,I update more detail .
Sin <ABD must intercept arc AB the probability that m<ADB =30 is the same as the probability of D is located on arc ADB is 300/360 or 5/6 . So the probability that m<ADB =30 is also 5/6

I do 360-90=270
270/360=3/4
I don't know how get answer is:1