Question

Ctg3a-ctga=?????????????​

Answer 1

$\frac{-2cos\alpha }{sin3\alpha }$

Answer 2

To calculate the result of the expression "Ctg3a-ctga," I need to clarify the meaning of "Ctg3a" and "ctga" as they are not standard mathematical notations. The term "ctg" usually represents the cotangent function in trigonometry, but without further context or clarification, I cannot determine the exact value of the expression.

If "Ctg3a" and "ctga" represent specific variables, constants, or functions, please provide more information, and I'll be happy to help you with the calculation.