ICSE Class 10 Answered
problem
Asked by mahesh joshi | 11 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 | 11 Mar, 2012, 03:06: PM
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