If `(3-tan^2(pi/7))/(1-tan^2(pi/7))=kcos(pi/7)` then the value of `k` is (a)1 (b) 2 (c) 3 (d) 4

Explanation

To solve the equation

\[ \frac{3 - \tan^2\left(\frac{\pi}{7}\right)}{1 - \tan^2\left(\frac{\pi}{7}\right)} = k \cos\left(\frac{\pi}{7}\right), \]

we will follow these steps:

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