Calculation example - Find the apparent dip of a plane or seam in any direction

Given the rate and direction of full dip of a plane or seam, find the apparent dip in any other direction.

Known values:

Horizontal length along full dip direction = x

Full dip rate = 1 in x

Solution:

Apparent dip in any direction = 1 in y

Triangle ADC is right-angled at C, thus:

i.e. for x=5 and dip direction 45^o:

Or, for x=5 dip rate=1 in 10: