1. **Problem:** Given a point on the terminal side of an angle $\theta$, find the six trigonometric functions: $\sin\theta$, $\cos\theta$, $\tan\theta$, $\csc\theta$, $\sec\theta$, and $\cot\theta$.
2. **Formula and rules:** For a point $(x,y)$ on the terminal side of $\theta$, the radius $r = \sqrt{x^2 + y^2}$. Then:
$$\sin\theta = \frac{y}{r}, \quad \cos\theta = \frac{x}{r}, \quad \tan\theta = \frac{y}{x}$$
$$\csc\theta = \frac{r}{y}, \quad \sec\theta = \frac{r}{x}, \quad \cot\theta = \frac{x}{y}$$
Note: $r > 0$, and division by zero is undefined.
3. **Given point:** $(-1, 5)$
Calculate $r$:
$$r = \sqrt{(-1)^2 + 5^2} = \sqrt{1 + 25} = \sqrt{26}$$
4. **Calculate trig functions:**
$$\sin\theta = \frac{5}{\sqrt{26}}$$
$$\cos\theta = \frac{-1}{\sqrt{26}}$$
$$\tan\theta = \frac{5}{-1} = -5$$
$$\csc\theta = \frac{\sqrt{26}}{5}$$
$$\sec\theta = \frac{\sqrt{26}}{-1} = -\sqrt{26}$$
$$\cot\theta = \frac{-1}{5} = -\frac{1}{5}$$
5. **Summary:**
$$\sin\theta = \frac{5}{\sqrt{26}}, \quad \cos\theta = -\frac{1}{\sqrt{26}}, \quad \tan\theta = -5$$
$$\csc\theta = \frac{\sqrt{26}}{5}, \quad \sec\theta = -\sqrt{26}, \quad \cot\theta = -\frac{1}{5}$$
This completes the solution for the first point.
Trig Functions Point 457B59
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