Posted by Mason on .
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 distance.
A distance of 177.50 ft was measured along a 3% slope. Compute the horizontal
distance.
The slope distance between two points is 29.705 m and the difference in elevation between the points is 3.658 m. Compute the horizontal distance.

Math Surveying 
bobpursley,
horizontal distance=slopemeasurement*cosineTheta
on the final one:
horizontal=sqrt(slope^2 + elevation^2) 
Surveying 
MathMate,
Minor correction:
horizontal=sqrt(slope^2  elevation^2)