Find the value of tan27° tan34° + tan34° tan29° + tan29° tan27°

If any equation is in the form  tanx tany + tany tanz + tanz tanx  and  x + y + z = 90°

then,  tan(x+y+z) = 1  (always)

ATQ,(27 + 34 + 29) = 90

Hence,

⇒ tan (27+34+29) = tan90° = 1