fraccot(theta )csc(theta )=cos(theta )

常见问题解答

• $\text{求解 }\theta$ $\frac{\cot \left(\theta \right)}{\csc \left(\theta \right)}=\cos \left(\theta \right)$

  

  $$\theta \ne k\pi ,k\in \mathbb{Z}$$

• 核实 $\frac{\cot \left(\theta \right)}{\csc \left(\theta \right)}=\cos \left(\theta \right)$

  

  $$\text{为真}$$