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Find the angle between vec(P) = - 2hat(...

Find the angle between `vec(P) = - 2hat(i) +3 hat(j) +hat(k) and vec(Q) = hat(i) +2hat(j) - 4hat(k) `

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`theta = 90^(@)`
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KUMAR PRAKASHAN-WORK, ENERGY AND POWER -SECTION - B Numericals (Numerical From Textual Illustration)
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