Trig Word Problem: Find the longitude of Pontiana

[SaraKiesel]

I have a picture drawn but it doesnt seem right. A little help would be much appreciated.

The cities of Giamame, Somalia, and Pontiana, Borneo, are each on the equator. Pontiana is 7400 km east of Giamame (longitude 43 degrees East). Find the longitude of Pontiana.

Note: "43 degrees east" means "43 degrees east of the prime meridian".

 

[tkhunny]

Perhaps you'll need more information, such as the radius of the Earth.

 

[SaraKiesel]

yeah, i forgot that that part was in the instructions. the radius of Earth is 6400 km.

 

[tkhunny]

Okay, now the circumference of the Earth?

How does 7400 km compare to that?

How does all that compare to 43º?