Like so:
No worries - we all make them!
As follows:
I get the following:
(Check your calculation "So the second term now evaluates to (-10/9)/(181/100) = -1,000/729" tuffla2022)
Since probabilities must be less than 1, I've interpreted the question as follows:
Here's my take on this:
Hmm! What about y = -3?
QR is the hypotenuse, so:
tan R = PQ/PR sin R = PQ/20
so PQ/PR = 2*PQ/20 hence PR = 10
This should help: