Pregunta
Solve the trigonometric equation for all values \( 0 \leq x<2 \pi \) \[ \sin ^{2} x-1=0 \]
Ask by Macdonald Pollard. in the United States
Mar 20,2025
Solución de inteligencia artificial de Upstudy
Respuesta verificada por el tutor
Responder
The solutions are \( x = \frac{\pi}{2} \) and \( x = \frac{3\pi}{2} \).
Solución
Solve the equation \( \sin^{2}(x)-1=0 \).
Solve the equation by following steps:
- step0: Solve for \(x\):
\(\sin^{2}\left(x\right)-1=0\)
- step1: Move the constant to the right side:
\(\sin^{2}\left(x\right)=0+1\)
- step2: Remove 0:
\(\sin^{2}\left(x\right)=1\)
- step3: Simplify the expression:
\(\sin\left(x\right)=\pm \sqrt{1}\)
- step4: Simplify:
\(\sin\left(x\right)=\pm 1\)
- step5: Separate into possible cases:
\(\begin{align}&\sin\left(x\right)=1\\&\sin\left(x\right)=-1\end{align}\)
- step6: Calculate:
\(\begin{align}&x=\frac{\pi }{2}+2k\pi ,k \in \mathbb{Z}\\&x=\frac{3\pi }{2}+2k\pi ,k \in \mathbb{Z}\end{align}\)
- step7: Find the union:
\(x=\frac{\pi }{2}+k\pi ,k \in \mathbb{Z}\)
The solutions to the trigonometric equation \( \sin^{2}x - 1 = 0 \) for all values \( 0 \leq x < 2\pi \) are \( x = \frac{\pi}{2} + k\pi \), where \( k \) is an integer.
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Como
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Extra Insights
To solve the equation \( \sin^2 x - 1 = 0 \), we can start by rearranging it: \[ \sin^2 x = 1 \] Taking the square root of both sides, we find: \[ \sin x = \pm 1 \] Now, we look for angles \( x \) where the sine function equals 1 or -1: 1. \( \sin x = 1 \) occurs at \( x = \frac{\pi}{2} \). 2. \( \sin x = -1 \) occurs at \( x = \frac{3\pi}{2} \). Therefore, within the interval \( 0 \leq x < 2\pi \), the solutions to the equation \( \sin^2 x - 1 = 0 \) are: \[ x = \frac{\pi}{2}, \frac{3\pi}{2} \]

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