The intersections of 12th St., Constitutional Ave., and Pennsylvania Ave. in Washington, D. C. form a triangle. The Old Post Office is wedged in the 12th St. − Pennsylvania Ave. angle of this triangle. If the 12th St. − Constitutional Ave. angle measures 90°, and the Constitutional Ave. − Pennsylvania Ave. angle measures 30°, what is the measure of the angle the Old Post Office is wedged in?

hi there!

step-by-step explanation:

a roof pitch is basically for every inch rise there is 12 inches run.

the height of the roof is also known as the rafter.

formula: rafter^2 = rise^2 + run^2

rafter^2 = 5^2 + 12^2

rafter^2 = 25 + 144

rafter ^2 = 169"^2

the height of the roof from the lowest point to the highest point is 169"^2.

hope this : )

b. f(x) = –√x + 3this is the correct answer

the answer to your question is b.