The difference between the sum of the angle of a spherical
angle on the earth surface and the angle of the cross ponding
plane triangle for every 195.5 km? of area is only
(0) 1 sec
(T) 10 sec
(T)15 sec
(ET) 5 sec
€. The error is measured length due to incorrect holding of chain
is
(co) Compensating error (T) Cumulating error
(a) Instrumental error
(ET) Negative error
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The difference between the sum of the angles of a spherical triangle on the earth surface and the angles of the corresponding plane triangle for every 195.5 km2 of are is
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in spherical triangle 195.5km sq than Angle creat 1 sec
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