Monday

December 22, 2014

December 22, 2014

Posted by **Anonymous** on Friday, April 10, 2009 at 4:59pm.

how should I start this?

- calculus -
**Reiny**, Friday, April 10, 2009 at 5:10pmI visualize a circle with radius 6400 and the ship at a point P.

let the eyes of the lifeguard be Q.

then Q is 6400.004 km from the centre of our earth circle.

let PQ = x

x^2 + 6400^2 = 6400.004^2

I got x = appr. 7.155 km

- calculus -
**Anonymous**, Saturday, April 11, 2009 at 8:50pmthe answer is suppose to be 2675.3

..

**Answer this Question**

**Related Questions**

11th grade - A lifeguard was staring at a ship in the distance, and watched the ...

Trigonometry - I have three questions that I need help to answer. 1) a balloon ...

calculus - A shark, looking for dinner, is swimming parallel to a straight beach...

pre-calc - a lifeguard sits on the lifeguard stand that is about eight feet high...

physics - A child, who is 45 m from the bank of a river is being carried ...

college algebra - on a ship, the distance d that you can see to the horizon is ...

Juwayria Highscholl - An obsever is looking out to sea from the top of a ...

physics - A lighthouse that rises 46.0 ft above the surface of the water sits ...

check set up trigonometry - Lee is on a cliff 360 m above sea level, the angle ...

maths - From an aircraft flying at 8000 metres above sea level the angle of ...