Find sin (a+b) when sina=(3/5) with 90 degrees < a < 270 degrees, and if cosb=(8/17) with 0 degrees < b< 180 degrees

State if the two triangles are congruent. if they are, state how you know?

15/16 as a decimal rounded to the nearest hundredth

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field