Find the angles listed on the above picture by using the theorems of a circle? ​

In the 30-60-90 triangle below side s has a length of and side r has a length

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x