Mathbits.com Geocaching problem

[IGetOwnedByGeometry777]

http://mathbits.com/caching/g456976.html
its the 2nd problem that i need help with
since there is like nothing for me to start with i dont know how to solve it.

[mathsmad]

http://mathbits.com/caching/g456976.html
its the 2nd problem that i need help with
since there is like nothing for me to start with i dont know how to solve it.

Hello,

I can give you the answers here. For explanation, pls contact me thru email.
ANSWERS:-
x = 40; m<1 = 60°; m<2 = 60°; m<3 = 120°; m<4 = 30°
Arcs are measured in terms of its central angle. Now we have at the center, 360° in all. This 360° is the measure of the total arcs in the circle. i.e. 3 arcs in our prob. Now, you can probably understood and solve such probs. Feel free to contact me.
All the best.