Finn is drafting plans for a staircase that will go from the sidewalk to the doorway of a historic building 848484 feet \text{(ft)}(ft)start text, left parenthesis, f, t, right parenthesis, end text above. He measures the length of a string stretched from the sidewalk to the door and finds it to be 123\text{ ft}123 ft123, start text, space, f, t, end text, as shown at left. What angle \thetaθtheta, above the horizontal, should be used to build this staircase? (Round your answer to the nearest hundredth of a radian.)

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

20

step-by-step explanation:

cut 138 centimeters off

step-by-step explanation:

250-112 = 138