JEE PYQ: Definite Integration Question 28
Question 28 - 2020 (04 Sep Shift 2)
The integral $\int_{\pi/6}^{\pi/3} \tan^3 x \cdot \sin^2 3x(2\sec^2 x \cdot \sin^2 3x + 3\tan x \cdot \sin 6x),dx$ is equal to:
(1) $\dfrac{7}{18}$
(2) $-\dfrac{1}{9}$
(3) $-\dfrac{1}{18}$
(4) $\dfrac{9}{2}$