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Problem 43

Airplane Ascent An airplane leaves the runway cli…

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Problem 42

Solving a Trigonometric Equation
In Exercises $35-42$ , solve the equation for $\theta,$ where $0 \leq \theta \leq 2 \pi$
$$\cos \frac{\theta}{2}-\cos \theta=1$$

Answer

$\theta=\pi, \frac{2 \pi}{3}$


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