Question

From a point A on level ground, the angles of elevation of the top,D,and bottom,B, of a flagpole situated on the top of a hill are measured as 47degrees and 54 min. and 39 degrees and 49 min. . Find the height of the hill if the height of the flagpole is 115.5ft.

Answer 1

how?

Answer 2

i will get the angle B?

Answer 3

how can i find the height of the hill?

Answer 4

can i get first the angle B...then use trigonometric function?

Answer 5

yeah sum of angle of triangle is 180
and you have two angle so you can find the third

Answer 6

i got 50 degrees 15 min. in angle B AND D= 42degrees 6 min

Answer 7

how can i find the length of the hill?

Answer 8

height*

Answer 9

first we are looking at top and from same position at bottom

Answer 10

BOA & DOA are right angle triangle

Answer 11

so how can i get OB?

Answer 12

\[\tan \theta= \frac{ perpendicular }{ base }\]

Answer 13

tan (angle BOA)=OB/OA

Answer 14

tan(angle DAO)= OD/OA

Answer 15

tan (47 degree 54 min)=x/OA

Answer 16

tan(39degree 49 min)=(x-115.5)/OA

Answer 17

solve these 2 find value of OA and put it in Other

Answer 18

what formula will i use ..you give me a damn many formulas hehe

Answer 19

for trianle DOA

Answer 20

what formula?

Answer 21

tan (47 54')=x/ OA now tell me the value of OA

Answer 22

i that OA or BA?

Answer 23

ok tell me first

Answer 24

in right angle triangle
tan(theta)= ?????

Answer 25

i dont know..because i dont know the value of x

Answer 26

tell me in term of x

Answer 27

tan(47degrees54min.)=1.10672

Answer 28

take x as x and tell than??

Answer 29

\[OA=\frac{ x }{ \tan (47degrees 54\min. }\]

Answer 30

yeah now from triangle BOA
tan (theta)=???

Answer 31

OB=x-115.5

Answer 32

how?

Answer 33

BOA is aright angle triangle

Answer 34

tan(39 degree 49 minute )=????

Answer 35

0.8337

Answer 36

loll
tan (theta)=???
in right angle triangle BOA

Answer 37

can you just get to the point .. i dont know what is it please!!1