cosec18$^\circ$ is a root of the equation : - DASH

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Question

cosec18$^\circ$ is a root of the equation :

x² + 2x $-$ 4 = 0

4x² + 2x $-$ 1 = 0

x² $-$ 2x + 4 = 0

x² $-$ 2x $-$ 4 = 0

Solution

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