Find $\tan (2 A)$, if $\tan (A)=-\frac{11}{60}$, and $A$ is in quadrant 4 .
So, the final answer is \(\boxed{-0.37941937338315607}\).
Step 1 :We are given that \(\tan A = -\frac{11}{60}\) and we need to find \(\tan (2 A)\).
Step 2 :We know that the formula for \(\tan (2 A)\) is \(\frac{2 \tan A}{1 - \tan^2 A}\).
Step 3 :Substituting \(\tan A = -\frac{11}{60}\) into the formula, we get \(\tan (2 A) = \frac{2 \times -\frac{11}{60}}{1 - (-\frac{11}{60})^2}\).
Step 4 :Solving the above expression, we find that \(\tan (2 A) = -0.37941937338315607\).
Step 5 :So, the final answer is \(\boxed{-0.37941937338315607}\).