Question

If $cot(\theta +\alpha ),3cot\theta ,cot(\theta -\alpha )$ are in $AP,$ then value of $\frac{si{n}^2\theta }{si{n}^2\alpha },$ wherever defined, is

• A. $\frac{3}{2}$
• B. $3$
• C. $\frac{2}{3}$
• D. $2$

Answer 1

Answer: (A)

$x\Rightarrow a+b-x$