Transit Survey

Bearing angles - transit surveying ?

The true bearing of line AB is N30.15E, and the true bearing of line AC is S10.55E. The angle BAC measured clockwise is:

A. 19.20
B. 199.20

i thought this was the calculation:

180 - 30.15 - 10.55 = 139.3 ?! but thats not correct on the multiple choice... what am i doing wrong?

Perhaps what you put as decimal places are actually minutes. (1 degree = 60 minutes)

180º00' - 30º15' - 10º55'

To make it easier to subtract we can rewrite 180º as 178º120'

180º00' - 30º15' - 10º55'
= 178º120' - 30º15' - 10º55'

So, now you work out the degrees
178º - 30º - 10º
= 138º

Then the minutes
120' - 15' - 55'
= 50'

And then we arrive at 138º50', in which case the answer would be D.

Find Transit Survey On eBay Below:

Recently Purchased Transit Survey:

transit tripods and grade poles for surveying, starret no 99 transit with tripod and fiberglass surveying pole, northwest aluminum quick clamp survey contractor tripod for transit laser nat83, sokkia tripod wood fiberglass survey gps laser mount field transit used, topcon aluminum yellow transit surveying tripod for total stations free ship, flat head hd wooden tripod survey contractor transit total station, heavyduty wood tripod surveying transit level survey equipment, sokkisha sokkia lietz topcon wooden tripod transit survey surveyor from wood, aluminum quick clamp survey contractor tripod for transit or level perfect brand

Comments are closed.