11. use this triangle. a. find the length of the hypotenuse using the special relationships for a 45 –45 –90 triangle. explain the relationships. b. write the exact value for sin 45 as a fraction in simplest form. c. use the formula for the area of a triangle given sas to find the area of the triangle. explain your steps. d. use a different method to find the area of the triangle. explain your steps.