Thursday

July 31, 2014

July 31, 2014

Posted by **Anonymous** on Monday, April 23, 2012 at 1:09pm.

- math -
**Damon**, Monday, April 23, 2012 at 1:33pma is vertically under pole, base to tip

41 - a is shadow tip from under pole tip

height of pole = y cos 7 = .993 y

tan 48 = .993 y/(41-a)

tan 7 = a/y so a = y tan 7

then

tan 48 = .993 y/(41 -y tan 7) solve for y

- math -
**V**, Wednesday, March 20, 2013 at 10:46pmDraw a big diagram

You end up with a triangle with:

the horizontal side = 47 ft

the side representing the leaning pole ... call it a

and the angle opposite the pole side = 51°

The pole makes an angle of 7° with the vertical ... so the angle between to pole side and the 47ft side = 90 - 7 = 83°

So that make the angle opposite the 47 ft side = 180 - (51 + 83) = 46°

Now you can use the sine rule to find the length of the pole:

a/sin51° = 47/sin46

a = 47 * sin51 / sin46

a = 50.8 ft

so the length of the pole is 50.8 ft

**Related Questions**

Pre-Calculus-Trig - A pole tilts 12 degrees from the vertical, away from the sun...

Trigonometry - the leaning tower of pisa is 179 ft tall. it leans at an angle of...

calculus - A straight road makes an angle, A of 12 degrees. When the angle of ...

trig - This a problem I need help with. A vertical ple stands by a road that is ...

Trig - A straight road slopes upward 14 degrees from the horizontal. A vertical ...

calculus - A pole at a right angle to the horizontal is located on a slope that ...

math - Two pieces of wire are stretched from the top M, of a vertical pole to ...

college - The angle of elevation from point A to the top of a vertical pole is ...

Trig - A vertical pole stands on a 20° slope from 50 m down the slope from the ...

math - A 20 feet vertical pole cast a shadow of 32 feet. What is the angle of ...