## Trigonometry (11th Edition) Clone

$$1$$
$$\frac{1}{\csc^{2}\theta}+\frac{1}{\sec^{2}\theta}$$ Rewrite using Reciprocal Identities $$\sin^{2}\theta+\cos^{2}\theta$$ $\sin^{2}\theta+\cos^{2}\theta=1$ because of the Pythagorean Identities $$=1$$