Question

Using properties of determinant, show that△ = = 0 ∣ ∣ ∣ ∣ cosec θ 2 cot θ 2 42 −cot θ 2 −cosec θ 2 40 1 −1 2 ∣ ∣​

Answer 1

Answer:

??????????????????!??!?!? ??