Answer:
Option A is correct
the height of the flagpole is, 41.2 ft
Step-by-step explanation:
As per the statement:
The angle looking up at the sun is 70°
⇒
It is also given that:
A flagpole casts a shadow of 15 ft.
For this you can see the diagram as shown below in the attachment.
Now, find the height of the flagpole.
Let h be the height of flagpole.
using tangent ratio:

From the given diagram;

Opposite side = Height of the Flag pole = h
Adjacent side = Shadow of the flagpole = 15 ft
Substitute these we get;

Multiply both sides by 15 we get;


Simplify:

or
h = 41.2 ft
Therefore, the height of the flagpole is, 41.2 ft