{"result":{"text":"tan to the power of negative 1 end exponent open parentheses fraction numerator d over denominator 1 plus a subscript 1 a subscript 2 end fraction close parentheses plus tan to the power of negative 1 end exponent open parentheses fraction numerator d over denominator 1 plus a subscript 2 a subscript 3 end fraction close parentheses equals"},"status":"ok"}