From given figure tan A.tan C equals to:

\frac{1}{\sqrt{2}}

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\sqrt{2}

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Solution

The correct option is D 1
$tan A = \frac{B C}{A B} = \frac{1}{1} = 1$
$tan C = \frac{A B}{B C} = \frac{1}{1} = 1$
$tan A \cdot tan C = 1 \times 1 = 1$
Hence, option D is correct.

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