IDNLearn.com: Your go-to resource for finding expert answers. Whether your question is simple or complex, our community is here to provide detailed and trustworthy answers quickly and effectively.
Sagot :
To solve this problem, we start with [tex]\(\sec \theta = -\frac{37}{12}\)[/tex] and aim to find [tex]\(\cot \theta\)[/tex] in the interval [tex]\(\frac{\pi}{2} < \theta < \pi\)[/tex].
1. Calculate [tex]\(\cos \theta\)[/tex]:
Since [tex]\(\sec \theta = \frac{1}{\cos \theta}\)[/tex], we can find [tex]\(\cos \theta\)[/tex] by taking the reciprocal of [tex]\(\sec \theta\)[/tex]. Therefore,
[tex]\[ \cos \theta = \frac{1}{\sec \theta} = \frac{1}{-\frac{37}{12}} = -\frac{12}{37}. \][/tex]
2. Determine [tex]\(\sin \theta\)[/tex]:
We need to find [tex]\(\sin \theta\)[/tex] using the Pythagorean identity: [tex]\(\sin^2 \theta + \cos^2 \theta = 1\)[/tex].
Plugging in our value for [tex]\(\cos \theta\)[/tex],
[tex]\[ \cos^2 \theta = \left(-\frac{12}{37}\right)^2 = \frac{144}{1369}. \][/tex]
Hence,
[tex]\[ \sin^2 \theta = 1 - \cos^2 \theta = 1 - \frac{144}{1369} = \frac{1369}{1369} - \frac{144}{1369} = \frac{1225}{1369}. \][/tex]
Since [tex]\(\theta\)[/tex] is in the second quadrant ([tex]\(\frac{\pi}{2} < \theta < \pi\)[/tex]), where sine is positive, we take the positive square root:
[tex]\[ \sin \theta = \sqrt{\frac{1225}{1369}} = \frac{35}{37}. \][/tex]
3. Calculate [tex]\(\cot \theta\)[/tex]:
We know that [tex]\(\cot \theta = \frac{\cos \theta}{\sin \theta}\)[/tex]. Using the values obtained,
[tex]\[ \cot \theta = \frac{\cos \theta}{\sin \theta} = \frac{-\frac{12}{37}}{\frac{35}{37}} = -\frac{12}{35}. \][/tex]
Therefore, the value of [tex]\(\cot \theta\)[/tex] is:
[tex]\[ -\frac{12}{35}. \][/tex]
The correct choice is [tex]\(\boxed{-\frac{12}{35}}\)[/tex].
1. Calculate [tex]\(\cos \theta\)[/tex]:
Since [tex]\(\sec \theta = \frac{1}{\cos \theta}\)[/tex], we can find [tex]\(\cos \theta\)[/tex] by taking the reciprocal of [tex]\(\sec \theta\)[/tex]. Therefore,
[tex]\[ \cos \theta = \frac{1}{\sec \theta} = \frac{1}{-\frac{37}{12}} = -\frac{12}{37}. \][/tex]
2. Determine [tex]\(\sin \theta\)[/tex]:
We need to find [tex]\(\sin \theta\)[/tex] using the Pythagorean identity: [tex]\(\sin^2 \theta + \cos^2 \theta = 1\)[/tex].
Plugging in our value for [tex]\(\cos \theta\)[/tex],
[tex]\[ \cos^2 \theta = \left(-\frac{12}{37}\right)^2 = \frac{144}{1369}. \][/tex]
Hence,
[tex]\[ \sin^2 \theta = 1 - \cos^2 \theta = 1 - \frac{144}{1369} = \frac{1369}{1369} - \frac{144}{1369} = \frac{1225}{1369}. \][/tex]
Since [tex]\(\theta\)[/tex] is in the second quadrant ([tex]\(\frac{\pi}{2} < \theta < \pi\)[/tex]), where sine is positive, we take the positive square root:
[tex]\[ \sin \theta = \sqrt{\frac{1225}{1369}} = \frac{35}{37}. \][/tex]
3. Calculate [tex]\(\cot \theta\)[/tex]:
We know that [tex]\(\cot \theta = \frac{\cos \theta}{\sin \theta}\)[/tex]. Using the values obtained,
[tex]\[ \cot \theta = \frac{\cos \theta}{\sin \theta} = \frac{-\frac{12}{37}}{\frac{35}{37}} = -\frac{12}{35}. \][/tex]
Therefore, the value of [tex]\(\cot \theta\)[/tex] is:
[tex]\[ -\frac{12}{35}. \][/tex]
The correct choice is [tex]\(\boxed{-\frac{12}{35}}\)[/tex].
We greatly appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. Trust IDNLearn.com for all your queries. We appreciate your visit and hope to assist you again soon.