If F =2 +3 -4 k and 5 =-2 i +8 j - k , then find angle between force and displacement.

Physics · NEET · NTA Exams — BASIC MATHEMATICS AND VECTOR

1. \(\cos ^{-1}\left(\frac{12}{\sqrt{13} \sqrt{65}}\right)\)
2. \(\cos ^{-1}\left(\frac{24}{\sqrt{29} \sqrt{65}}\right)\)
3. \(\cos ^{-1}\left(\frac{12}{\sqrt{21} \sqrt{65}}\right)\)
4. \(\cos ^{-1}\left(\frac{24}{\sqrt{29} \sqrt{69}}\right)\)

Answer

(B) ^ -1 ( 24 29 65 )

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