KCET 2009 Math Solved Paper
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Question : 7 of 61
Marks:
+1,
-0
If ${a}↖{→} ⋅ {b}↖{→}=-|{a}↖{→}||
{b}↖{→}|, t h e n t h e a n g l e b e t w e e n a n d
{b}↖{→}|
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