\operatorname { tan } 2 x = \frac { 2 \operatorname { tan } x } { 1 - – InterviewSolution

InterviewSolution

1.

\operatorname { tan } 2 x = \frac { 2 \operatorname { tan } x } { 1 - \operatorname { tan } ^ { 2 } x }

Answer»

tan(x+x) = tan(x) + tan(x) ---------------------- 1- tan(x) × tan(x)

tan(2x) = 2tan(x) ---------------------- 1- tan²(x)

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