Tan-5 - 2tan2-5 - 44-5 -

The correct option is A π5 tanπ5 + 2tan2π5 + 44π5 Add and subtract π5 = π5 π5+tanπ5 + 2tan2π5 + 44π5 Apply this formula #160; x ...

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Sum of Trigonometric Ratios in Terms of Their Product

tanπ5 + 2tan2...

Question

$tan \frac{π}{5} + 2 tan \frac{2 π}{5} + 4 cot \frac{4 π}{5} =$

cot \frac{π}{5}

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cot \frac{2 π}{5}

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cot \frac{3 π}{5}

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cot \frac{4 π}{5}

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Solution

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Similar questions

tan \frac{π}{5} + 2 tan \frac{2 π}{5} + 4 cot \frac{4 π}{5}

tan \frac{π}{5} + 2 tan \frac{2 π}{5} + 4 cot \frac{4 π}{5}

\frac{π}{5} + 2

\frac{2 π}{5} + 4

\frac{4 π}{5} =

If $t a n^{- 1} x + t a n^{- 1} y = \frac{4 π}{5}, t h e n c o t^{- 1} x + c o t^{- 1} y$ equals to

(a) $\frac{π}{5}$ (b) $\frac{2 π}{5}$ (c) $\frac{3 π}{5}$ (d) $π$

{cos}^{2} \frac{3 π}{5} + {cos}^{2} \frac{4 π}{5}

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