Tan(-x)csc(-x)/sec(-x)cot(-x) simplify the expression

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.