1.

A line makes the same angle θ with each of the x and z−axes. If the angle β, which it makes with the y−axis, is such that sin2β=3sin2θ, then cos2θ=

Answer»

A line makes the same angle θ with each of the x and zaxes. If the angle β, which it makes with the yaxis, is such that sin2β=3sin2θ, then cos2θ=



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