| List-I (Method of weed control) | List-II (Measure of weed control) |
| (A) Preventive method of weed control | (I) Proper crop rotation |
| (B) Cultural method of weed control | (II) Control of Lantana camara (Prickly Pear) by Lantana bugs |
| (C) Chemical weed control | (III) Use of herbicide |
| (D) Biological weed control | (IV) Use of weed-free seeds |
The value of $\dfrac{1+\cot^2 \theta}{1+\tan^2 \theta}$ will be: