problem

Asked by mahesh joshi | 11th Mar, 2012, 02:18: PM

Expert Answer:

x2 + y2 + z2 =a2 (sin2A.cos2C + sin2A.sin2C + cos2A)

 = a2 {sin2A(cos2C + sin2C) + cos2A}

 = a2 { sin2A + cos2A} = a2

Answered by  | 11th Mar, 2012, 03:06: PM

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