# surveying math

posted by .

I need help with this problem and I need to show my work. Can anyone help me?

A vertical angle of -40 is recorded between A and B. The slope distance, after meteorological corrections, is 806.388 m. What is the horizontal distance between A and B?

• surveying math -

The theodolite measures 0° when the telescope is horizontal, and 90° when it is vertically upwards. So -40° is 40° below the horizontal.

The sloping distance is 806.388, so the horizontal distance is 806.388*cos(40°)=617.729

## Similar Questions

1. ### math

How would you do _______ \/ 388 _____ 6 I need it for a quadratic equation it's ________ -10 + or - \/ 388 ______ 6 ____ the answer is -5+ or - \/ 97 ___ 3 how did they get that ?
2. ### mathematics

Need help with this math problem please. Work need to be show but I have no idea how to complete the problem. (-4)3 (the 3 is an exponent) Thanks for your help
3. ### Geometry

A wooden board is placed so that it leans against a loading dock to provide a ramp. The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support. The bottom of the support is 9 feet from the point …
4. ### Math ( Surveying )

Need help with this problem! Thanks in advance. The ground clearance of an overhead electrical cable must be determined. Surveyor B is positioned directly under the cable (surveyor B can make a position check by sighting past the string …
5. ### Geometry

PLEASE! Someone help me with geometry!? A wooden board is placed so that it leans against a loading dock to provide a ramp. The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support. The bottom
6. ### Math Surveying

Hey, Need some help working these 3 problems. I have the answers but I'm having problems working them. Thank you in advance. The slope measurement between two points is 25.333 m and the slope angle is 1°50. Compute the horizontal …
7. ### Math Surveying

Need help working this problem. Thanks in advance! 1) A 50-m tape is used to measure between two points. The average weight of the tape per meter is 0.320 N. If the measured distance is 48.888 m, with the tape supported at the ends …
8. ### Math Surveying

Hey, I need help working these problems. Thanks you. 1) A 50-m tape is used to measure between two points. The average weight of the tape per meter is 0.320 N. If the measured distance is 48.888 m, with the tape supported at the ends …
9. ### Surveying

I am looking for horizontal distance between 2 points. My slope distance is 153.97' and a vertical distance of 91degrees 32minutes 45seconds.
10. ### Algebra

Doing a slope project in Algebra. The instructions are to make a picture And label coordinates points.. You have to show a negative slope. A verticle slope, an undefined slope, And a positive slope. Here is my problem. I have to write …

More Similar Questions