Translate the words problem into an expression there are x students trying out for a solo in a choir concert only 6 will be chosen how many students will not be chosen

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.

Math each whole number with a rational,exponential expression

If the value of cos330°is√3/2 then find cos 165°.