What is the answer to: tan^1(cot(pi/8))

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

The first five terms of a linear sequence are given below. 7 , 12 , 17, 22 , 27 , what is the next term of the sequence?

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut