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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Rahul kumar
Answer: 1 Given planes are (1 0 1) and (bar1 0 1). Angle between these two planes can be calculated as follows: Cos(angle) = [(1 × (-1)) + (0×0) + (1×1)] / [ sqrt (2) × sqrt (2) ] = (-1+1) / 2 = 0 Cos(angle) = 0 Angle = 90° So, Sine(angle) = Sin(90)= 1