Question

Check whether 6 raised to the power h can end with digit 0 for any natural number n

1. PROVE THAT : 2 cos π/13 cos 9π/13 cos 3π/13 cos 5π/13 =0
2. A beam is supported at its end by supports which are 12 meters apart.Scince the load is concentrated at its centre,there is a deflection of 3 cm at the centre and the deflected beam is in the shape of a parabola.How far from the centre is the deflection 1 cm.

plz answer this 

• In 1.1 Q. 10 (5) ;  for transitive, if (1,2) and (2,1) belong to R, then (1,1) & (2,2) must belong to R to satisfy the condition of transitive relation  , which is not there. So how is it transitive ?
  

2x-y=2 and 4x-y=4 plotting graph

If AB||CF,CD||EF THEN FIND x

I want class 11 sample paper for final exam