13. a vertical flagstaff is on the top of a building
which stands on level ground. from a point p
on ground level the angle of elevation of the top
of the flagstaff is observed to be 32%, and the
angle of elevation of the bottom of the flagstaff
to be 29º. from a point q on ground level,
75 m closer to the building, the angle of eleva-
tion of the top of the flagstaff is 38°.
calculate to three significant figures:
(a) the distance of p from the base of the
building
(b) the height of the building
(c) the length of the flagstaff.

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b