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[" Let "bar(a),bar(b)" and "bar(c)" be n...

[" Let "bar(a),bar(b)" and "bar(c)" be non-coplanar unit vectors equally inclined to one another at an acturest of then "||bar(a)" ,"bar(c)|" lineterms "],[" of els equal to "],[bigcirc(1+cos theta)sqrt(cos2 theta)],[" (1"+cos theta)sqrt(1-2cos2 theta)]

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