# 1/sinx + 1/tanx=pi/2 Prove that 2x²+1=√5?

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Ratnaker Mehta
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Mar 8, 2018

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Please refer to the **Explanation.**

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I hope the **Question** is :

If,

Let

Given that,

This is a **quadr. eqn.** in

Solving it with the help of the **quadr. formula,** we get,

Since,

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