One of the most important and conceptual question from trigonometric identities in which we have to find the value of 4tan²θ-4/cos²θ by using trigonometric formulas
Kindly give me a detailed solution of this question
RS Aggarwal, Class 10, chapter 13C, question no 14
4tan²θ – 4/cos²θ
=4×sin²θ/Cos²θ – 4/cos²θ
=4(sin²θ−1)/cos²θ
=4(−cos²θ)/cos²θ
=−4