Question

cosec square©(1+cos©)(1-cos©)=?​

Answer 1

Answer:

1

Step-by-step explanation:

${ \csc}^{2} \theta(1 + \cos \theta)(1 - \cos \theta) \\ = \frac{1}{ { \sin }^{2} \theta } (1 - { \cos}^{2} \theta) \\ = \frac{1}{ { \sin }^{2} \theta } \times { \sin }^{2} \theta \\ = 1$