A coal bed dips 50deg towards N45degW it’s apparent dp towards N20degW will be around?
Use this formula
sin ? ? tan ? = tan ?
? = real dip.
? = apparent dip.
? = angle between the strike direction of the plane and the apparent dip direction.
in case of your question, it will be:
Strike will be: N45E, apparent dip direction = N20W
? = 50
? = angle between N45E and N20W = 65
tan(?) = Sin(65) . tan (50)
tan(?) = 0.906 x 1.191
tan(?) = 1.08
? = 47.20 degrees