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Qeneial Solutions \( 1 \cdot \sin \theta=3 \cos \theta \)

Ask by Powers Fowler. in South Africa
Mar 08,2025

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Answer

The solutions are \(\theta = \arctan(3) + k\pi\), where \(k\) is any integer.

Solution

Solve the equation \( 1\sin(\theta)=3\cos(\theta) \). Solve the equation by following steps: - step0: Solve for \(\theta\): \(1\times \sin\left(\theta \right)=3\cos\left(\theta \right)\) - step1: Multiply: \(\sin\left(\theta \right)=3\cos\left(\theta \right)\) - step2: Divide both sides: \(\frac{\sin\left(\theta \right)}{\cos\left(\theta \right)}=3\) - step3: Divide the terms: \(\tan\left(\theta \right)=3\) - step4: Use the inverse trigonometric function: \(\theta =\arctan\left(3\right)\) - step5: Add the period: \(\theta =\arctan\left(3\right)+k\pi ,k \in \mathbb{Z}\) The general solutions to the equation \(1 \cdot \sin \theta = 3 \cos \theta\) are given by \(\theta = \arctan(3) + k\pi\), where \(k\) is an integer.

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Mind Expander

Did you know that the equation \( 1 \cdot \sin \theta = 3 \cos \theta \) can be rewritten to form a tangent function? Simply divide both sides by \( \cos \theta \) (as long as \( \cos \theta \neq 0 \)), and you get \(\tan \theta = \frac{3}{1}\) or \(\tan \theta = 3\). This means that whenever you encounter this pattern, you can instantly think of calculating angles using the inverse tangent! Now, let’s talk about solving trig equations like this one. A common mistake is forgetting to consider the periodic nature of trigonometric functions. For this specific equation, after finding that \(\theta = \tan^{-1}(3)\), remember to account for all possible solutions by adding \(n\pi\) (where \(n\) is any integer) to your angle. This way, you capture all angles that yield the same tangent value!

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