The diagram below shows a model of a staircase in which all the riser heights are equal and all the tread lengths are equal.



A carpenter wants to build a staircase in which each riser has a height of 6 inches and each tread has a length of 11 inches.

Which of the following expressions is equal to the stair angle?

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

35-60 students are taking math.

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)