If x2 + y2 + z2 = r2 where x = r cos α cos β, y = r cos α sin β, then z has one of the following values (A) r cos α (B) r tan ∝ cos β (C) r tan ∝ tan β (D) r sin α

If x2 + y2 + z2 = r2 where x = r cos α cos β, y = r cos α sin �

1.	If x2 + y2 + z2 = r2 where x = r cos α cos β, y = r cos α sin β, then z has one of the following values (A) r cos α (B) r tan ∝ cos β (C) r tan ∝ tan β (D) r sin α
Answer» Correct option is (D) r sin α

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If x2 + y2 + z2 = r2 where x = r cos α cos β, y = r cos α sin β, then z has one of the following values (A) r cos α (B) r tan ∝ cos β (C) r tan ∝ tan β (D) r sin α

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