Let bara=alpha1bari+alpha2barj+alpha3bar...

Let `bara=alpha_1bari+alpha_2barj+alpha_3bark,barb=beta_1bari+beta_2barj+beta_3bark and barc=gamma_1bari+gamma_2barj+gamma_3bark,|bara|=2sqrt2,bara` makes an angle `pi/3` with the plane of `barb,barc` and the angle between `barb,barc is pi/6,` then `|(alpha_1,alpha_2,alpha_3),(beta_1,beta_2,beta_3),(gamma_1,gamma_2,gamma_3)|` is equal to (n is even natural number )

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