Circular curves chords

It is required to truncate a corner by 3 equal chords 20m long. The three-chord truncation is required to be calculated and set-out from the intersection point (IP). Determine the radius, tangent distance and bearing of each 20m chord. Calculate the set-out bearings and distances from the Intersection point for the Tangent Points (T1 and T2) and chords. Document all working. The following curve data is provided. 

Incoming bearing T1 to IP = 87d 10' 0" Outgoing bearing IP to T2 = 175d 18' 30"It is required to