1.When the altitude of the lower edge of the sun was observed with a transit on July 3, the reading of the vertical limb was 26degrees 20' 30". If the index error was +1’00”, the true altitude of the sun’s center was
(a) 26 degrees 01' 57"
(b) 26 degrees 03' 57"
(c) 26 degrees 33' 29"
(d) 26 degrees 35' 29"
2.The longitude of Albany, New York, is +73 degrees 44' 49" and the longitude of Los Angeles, California, is +118 degrees 10' 44". When the local mean time at Los Angeles is 10h 41m 00s a.m., the local mean time at Albany is
(a) 7h 41m 00s a.m.
(b)7h 43m 16s a.m.
(c) 1h 38m 44s p.m.
(d) 1h 41m 00s p.m.
3.When the sun was observed for azimuth at a place in latitude 37 degrees 23 feet 12 inches, the ture altitude of the sun’s center was 45 degrees 38 feet and the declination of the sun was S 9 degrees 15.8 feet. The value of ½ (z +l-d) was:
(a) 36 degrees 14 feet 42 inches
(b) 36 degrees 52 feet 42 inches
(c) 45 degrees 30 feet 30 inches
(d) 46 degrees 08 feet 30 inches