6 Feb
2011
6 Feb
'11
6:03 p.m.
On the unit sphere, measuring angles in radians. Place an arc with measure A on the equator. Place arcs with measures B and C at each end of A running north along meridians (perpendicular to A). Join the northern endpoints of B and C with a great circle arc. What is the area of the spherical quadrilateral thus formed? ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1204 / Virus Database: 1435/3426 - Release Date: 02/06/11