I have three joint sets in an area with a mechanically excavated road cut the orientation of the joint sets are 86/301, 84/358, 7/303 and the orientation of the slope is 88/315. (Dip amount / Dip direction)
Angle A in CSMR is the angle between plunge direction of line of intersection formed by discontinuities and slope dip direction. In your case you seem to have a very steep wedge formed by the first 2 sets. If you don't have software for kinematic analysis using stereographic projections then you can do this by hand. Use a Schmidt projection to draw the 2 joint planes and the slope face and find the intersection of the joints. Then draw 2 lines from the centre of the projection. One along the dip direction of the slope and one to the intersection point. Then measure the angle between the two lines.
Thank you sir for your correct information. I will use the software stereonet to find it out.
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