#### Answer

$$1$$

#### Work Step by Step

Use the Reciprocal Identity
$$\sec\theta=\frac{1}{\cos\theta}$$
and the Cotangent Identity
$$\cot\theta=\frac{\cos\theta}{\sin\theta}.$$
To obtain
$$\sin\theta\sec\theta\cot\theta=\sin\theta\bigg(\frac{1}{\cos\theta}\bigg)\bigg(\frac{\cos\theta}{\sin\theta}\bigg)=1.$$