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Ch. 6 - Inverse Circular Functions and Trigonometric Equations
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161, 9780135440780, 9780136881117, 9780135440827, 9780135924891Non è quello che usi tu?Cambia libro di testo
Capitolo 7, Problema 55

Solve each equation for x.
4/3 arctan x/2 = π

Guida verificata passo dopo passo
1
Start by isolating the arctan expression. Multiply both sides of the equation by \( \frac{3}{4} \) to get \( \arctan \left( \frac{x}{2} \right) = \frac{3}{4} \pi \).
Recall that \( \arctan(y) = \theta \) means \( \tan(\theta) = y \). So rewrite the equation as \( \tan \left( \frac{3}{4} \pi \right) = \frac{x}{2} \).
Evaluate \( \tan \left( \frac{3}{4} \pi \right) \) by considering the unit circle or known tangent values at special angles.
Once you find \( \tan \left( \frac{3}{4} \pi \right) \), set it equal to \( \frac{x}{2} \) and solve for \( x \) by multiplying both sides by 2.
Remember to consider the domain and range of the arctan function and check if there are any additional solutions based on the periodicity of the tangent function.

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