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Answered

sketch the angle then find its reference angle [tex] \frac{13\pi}{4} [/tex]

Answer :

We need to find the reference angle by sketching the angle:

First, we need to subtract it by 2π, then:

[tex]θ=\frac{13\pi}{4}-2\pi=\frac{5}{4}\pi[/tex]

Hence, the reference angle is 5π / 4.

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