1.

Show that area of the parallelogram whose diagonals are given by vec(a) and vec(b) is (1)/(2).|bar(a)xx bar(b)|. Also, find the area of the parallelogram, whose diagonals are 2 bar(i)-bar(j)+bar(k) and bar(i)+3bar(j)-bar(k).

Answer»


ANSWER :`=(1)/(2)(sqrt(62))` sq. UNIT


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