The angles which the vector 𝐀=3 𝐢̂+6 𝐣̂+2 𝐤̂ makes with the coordinate axes are (a) cos ^-13/...

The angles which the vector 𝐀=3 𝐢̂+6 𝐣̂+2 𝐤̂ makes with the coordinate axes are
(a) cos ^-13/7, cos ^-16/7 and cos ^-12/7
(b) cos ^-14/7, cos ^-15/7 and cos ^-13/7
(c) cos ^-13/7, cos ^-14/7 and cos ^-11/7
(d) None of these
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