Given that tan(t)=5/12, and 0 Which identity is best to start with?
What is the sec(t)?
Which identity can you now use to find cos(t)?
What is cos(t)?

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.