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Find the general solution of the following equation: tan θ2θ3=3

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Question

Find the general solution of the following equation:

tan `(2θ)/(3) = sqrt3`

Sum
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Solution

The general solution of tan θ = tan α is

θ = nπ + α, n ∈ Z

Now, 

tan `(2θ)/(3) = sqrt3`.

∴ tan `(2θ)/(3) = tan  pi/(3)           ...[∵ tan  pi/(3) = sqrt(3)]`

∴ The required general solution is given by

`(2θ)/(3) =  nπ +  pi/(3)`, n ∈ Z

i.e. θ = `(3npi)/(2) + pi/(2)`, n ∈ Z

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Chapter 3: Trigonometric Functions - Exercise 3.1 [Page 75]

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