Physics, asked by Everythingpurple, 1 year ago

Plss help class 11 vectors

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Answered by JaswanthGadde

0

Explanation:

Cosx = a.b/ lal lbl

= 6x7 + 6x4 + 4(-3) / root(36+36+9) X root(49+16+16)

= 54 / 81

= 2/3

x. = cos‐¹ (2/3)

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