A person standing 130 feet away from the foot of a tall building must look up at an
angle of 30° to see the top of the building.
There is a radio antenna on the top of the
building. The angle of elevation of the top of
the radio antenna is 45°.
Write an equation to determine the
height of the radio antenna.

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.

11) obtuse

13)right

15) acute

a≈380.13mi² would be your answer if the radius was 11 miles

the answer is b.

surface area: 169π

volume: 366π

i got it down.