Sir please give me a detailed solution of this question as it is very important for examination and it is taken from trigonometry, topic – trigonometric identities in which we have to find the value of 3cot²θ-3cosec²θ
RS Aggarwal, Class 10, chapter 13C, question no 13
3cot²θ−3cosec²θ
=3(cot²θ−cosec²θ)
=3×(−1)
=−3