Find the sec A if sin A = 0.8570

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

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.