Verify Trig Identity 64Cf51
1. **Stating the problem:**
Verify if the equation $$\frac{\sin x}{1 + \cos x} + \frac{\cos x}{\sin x} = \csc x$$ is true.
2. **Rewrite the left-hand side (LHS):**
Combine the two fractions over a common denominator:
$$\frac{\sin x}{1 + \cos x} + \frac{\cos x}{\sin x} = \frac{\sin x \cdot \sin x + \cos x (1 + \cos x)}{(1 + \cos x) \sin x}$$
3. **Simplify the numerator:**
$$\sin^2 x + \cos x + \cos^2 x$$
Recall the Pythagorean identity:
$$\sin^2 x + \cos^2 x = 1$$
So the numerator becomes:
$$1 + \cos x$$
4. **Substitute back into the fraction:**
$$\frac{1 + \cos x}{(1 + \cos x) \sin x}$$
5. **Cancel common factors:**
Since $$1 + \cos x \neq 0$$ (except at specific points where the expression is undefined), we can cancel:
$$\frac{1 + \cos x}{(1 + \cos x) \sin x} = \frac{1}{\sin x}$$
6. **Recognize the right-hand side (RHS):**
$$\frac{1}{\sin x} = \csc x$$
7. **Conclusion:**
The original equation holds true:
$$\frac{\sin x}{1 + \cos x} + \frac{\cos x}{\sin x} = \csc x$$
**Answer:** Yes, the equation is correct.