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Let vec A be a vector parallel to the ...

Let ` vec A` be a vector parallel to the line of intersection of planes `P_1a n dP_2dot` Plane `P_1` is parallel to vectors `2 hat j+3 hat ka n d4 hat j-3ka n dP_2` is parallel to ` hat j- hat ka n d3 hat i+3 hat jdot` Then the angle betweenvector ` vec A` and a given vector `2 hat i+ hat j-2 hat k` is a.`pi//2` b. `pi//4` c. `pi//6` d. `3pi//4`

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