P(r,9,<p)
x(r. 9. ę) = rsin(#)cos(ę?) 0 - r -00 ><r,0,^) = rsin(0)sra(0>) z(r, 0, <p) = r cos(0)
Ig. g gj |sin#cos^> r cos# cos#? -rsin^sin^j j- ; g ^ = sin# sin rcos#sin#> rsin#cos^ = r2sin#
U % m cos<9 -rsin# 0
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