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.

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

560

hope this : )