{"result":{"text":"table attributes columnalign left end attributes row cell W e space h a v e comma end cell row cell cos 2 B equals fraction numerator cos left parenthesis A plus C right parenthesis over denominator cos left parenthesis A minus C right parenthesis end fraction equals fraction numerator cos A cos C minus sin A sin C over denominator cos A cos C plus sin A sin C end fraction end cell row cell rightwards double arrow fraction numerator 1 minus tan squared B over denominator 1 plus tan squared B end fraction equals fraction numerator 1 minus tan A tan C over denominator 1 plus tan A tan C end fraction end cell row cell rightwards double arrow 1 plus tan squared B minus tan A tan C minus tan A tan C tan squared B end cell row cell equals 1 minus tan squared B plus tan A tan C minus tan A tan C tan squared B end cell row cell rightwards double arrow 2 tan squared B equals 2 tan A tan C rightwards double arrow tan squared B equals tan A tan C end cell row cell H e n c e comma space tan space A comma space tan space B space a n d space tan space C space w i l l space b e space i n space G. P. end cell end table"},"status":"ok"}