Find the exact value of each of the remaining trigonometric functions of \( \theta \). \[ \cos \theta=-\frac{7}{25} \text {, } \theta \text { in Quadrant II } \] \( \sin \theta=\square \) (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or the expression.)
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To find the sine function, we can use the Pythagorean identity, which states that: \[ \sin^2 \theta + \cos^2 \theta = 1 \] Given that \( \cos \theta = -\frac{7}{25} \), we can substitute that into the identity: \[ \sin^2 \theta + \left(-\frac{7}{25}\right)^2 = 1 \] Calculating \( \left(-\frac{7}{25}\right)^2 \): \[ \sin^2 \theta + \frac{49}{625} = 1 \] Next, we subtract \( \frac{49}{625} \) from both sides: \[ \sin^2 \theta = 1 - \frac{49}{625} = \frac{625 - 49}{625} = \frac{576}{625} \] Now, taking the square root of both sides, we have: \[ \sin \theta = \pm \sqrt{\frac{576}{625}} = \pm \frac{\sqrt{576}}{\sqrt{625}} = \pm \frac{24}{25} \] Since we are in Quadrant II, where sine is positive, we choose the positive value: \[ \sin \theta = \frac{24}{25} \] So, the exact value for \( \sin \theta \) is: \[ \sin \theta = \frac{24}{25} \] Now, let's find the remaining trigonometric functions. 1. **Tangent:** We can use the relationship \( \tan \theta = \frac{\sin \theta}{\cos \theta} \): \[ \tan \theta = \frac{\frac{24}{25}}{-\frac{7}{25}} = -\frac{24}{7} \] 2. **Cosecant:** This is the reciprocal of sine: \[ \csc \theta = \frac{1}{\sin \theta} = \frac{25}{24} \] 3. **Secant:** This is the reciprocal of cosine: \[ \sec \theta = \frac{1}{\cos \theta} = -\frac{25}{7} \] 4. **Cotangent:** This is the reciprocal of tangent: \[ \cot \theta = \frac{1}{\tan \theta} = -\frac{7}{24} \] In summary, the values of the trigonometric functions are: - \( \sin \theta = \frac{24}{25} \) - \( \tan \theta = -\frac{24}{7} \) - \( \csc \theta = \frac{25}{24} \) - \( \sec \theta = -\frac{25}{7} \) - \( \cot \theta = -\frac{7}{24} \)
