u X v is orthogonal to both u and v صواب u.v= 0 Two vectors u and v are orthogonal then صواب خط As it is known that

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u X v is orthogonal to both u and v صواب
u.v= 0 Two vectors u and v are orthogonal then صواب خط
As it is known that the polar transformation from cardician coordinate is x = r cos(0) x = r sin(0) this table can be represented in the Cartesian coordinate r 1 2 3 4 5 theta 00.785398 1.047198 1.570796 3.141 Chose the correct representation Х 0 1.414214 2.598076 4 00 у 1 1.414214 1.5 0 -5
Х х— оу 1 2 3 4 у о 0.785398 1.047198 1.570796 3.141593 Х 1 1.414214 1.5 о -5 3 у 0 1.414214 2.598076 4 о
— No 10 3 5 4 у 0 1.570796 3.141593 6.283185 15.70796