Write the equation for the inverse of the function. Y=cos(x-pi/2)

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

Write the equation of the circle centered at (10,-2) with radius 2