if vector (acap+2bcap) is perpendicular to vector (5acap-4bcap), then find angle between acap and b cap
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Answer:
Let p=a^+2b^
and q=5a^-4b^
since P and q are perpendicular hence
p. q=0
5+6a^.b^-8=0
a^. b^=1/2
cost=1/2
t=cosinverse(1/2)
Explanation:
t=angle between vectors
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