Find the value of x.
(2x - 8)° x° 31°

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Ten times the square of a non-zero number is eqaul to ninety times the number