Thursday

November 27, 2014

November 27, 2014

Posted by **Chloe Mack** on Sunday, January 30, 2011 at 7:44pm.

- Pre-Calculus-Trig -
**Henry**, Monday, January 31, 2011 at 8:44pmFirst, we draw a rectangle and label

the ver. sides 100ft and hor.(longer)

sides X ft. Then we draw a diag. from

upper left to lower rt. side forming a rt triangle. The angle of elevation = the angle of depression = 25deg.

Draw a 2nd line from upper left corner

to some point(near the center) on the

bottom hor. line forming an angle of

40deg with the hor. Label the 2 sections on the bottom line X1 and X2

(rt to lt).

tan25 = Y/X = 100/X,

X = 100 / tan25 = 214.45 ft.

tan40 = Y/X2 = 100/X2,

X2 = 100 / tan40 = 119.2ft.

X1 + X2 = X,

X1 + 119.2 = 214.5,

X1 = 214.5 - 119.2 = 95.3ft. = distance traveled.

**Answer this Question**

**Related Questions**

Pre-Calculus-Trig - A boat travels for 8 kilometers in a straight line from the ...

Geometry - A lighthouse keeper in his observation tower 120 feet above the ...

Precalculus - 1. A man stands 12 feet from a statue. The angle of elevation from...

math - While sailing, Donna sees a lighthouse and calculates that the angle of ...

math - A boat is spotted in the water with an angle of depression of 25° from ...

Math (Trig.) - A boat sailing from A to B travels in a straight line until the ...

algerba 1 - From the top of a lighthouse 210 feet high, the angle of depression ...

Math(trig) - Peggy’s Cove Lighthouse, in Nova Scotia, is possibly the most ...

math - From the top of a lighthouse 210 feet high, the angle if depression to a ...

algebra 1 - From the top of a lighthouse 210 feet high, the angle if depression ...