The horizontal axis of a transit was inclined by 8' with the horizontal due to non-adjustment. The first sight had a vertical angle of 40° and the next had an angle of -30°. Determine the error in the measured horizontal angle. 2'6" 11'20" 6'43" 2'55"

2-The horizontal angle reading at point A was 317°38'15" then the instrument turned to point B the reading changed to 46°26'20", find the horizontal angle AOB.

If the bearing of line AB is S 42° 30' 15" E and the bearing of CB is N 38° 42′ 25" E, find the following: a. Sitting at B, backsighting C, what is the angle to the right? b. For the same instrument scenario, what is the deflection angle to point C? Hint: Point B will be at the center.

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