Question

the angle of elevation of the top of the building from a point on the ground which is 10m away from the building is found to be 45° find the height of the building​

Answer 1

Answer:

In △PBC

tan30

o

=

y

10

3

1

=

y

10

y=10

3

y=10×1.732

y=17.32m

In △APC

tan45

o

=

y

x+10

y=x+10

x=y−10

=17.92−10

x=7.32

Step-by-step explanation:

From a point P on the ground the angle of elevation of the top of a 10m tall building is 30

o

. A flag is hoisted at the top of the building and the angle of elevation of the top of the flagstaff from P is 45

o

. Find the length of the flagstaff and the distance of the building from the point P. (you may tale

3

=1.732)

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