AnswersPrecalculusPractice TestQuestion 12
12
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Question 12 • Precalculus

What is the missing step and reason?

Answer
A
is equal to the fraction with numerator tangent of x plus tangent of x and denominator 1 plus tangent x ; tangent sum identity
B
is equal to the fraction with numerator tangent of x plus tangent of x and denominator 1 plus tangent x ; tangent double angle identity
C
is equal to the fraction with numerator tangent of x plus tangent of x and denominator 1 minus tangent x ; tangent sum identity
D
is equal to the fraction with numerator tangent of x plus tangent of x and denominator 1 minus tangent x ; tangent double angle identity
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