One-fourth of a number is -60. what's the number! ?

Analyze the diagram below and complete the instructions that follow. how to find tan

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me