1 line
65 B
TeX
1 line
65 B
TeX
\theta_1=\mfrac{1}{2}\chi,\qquad\theta_2=\mfrac{1}{2}(\pi-\chi),
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\theta_1=\mfrac{1}{2}\chi,\qquad\theta_2=\mfrac{1}{2}(\pi-\chi),
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