Question

If (1-sin2beta)-cos 2 beta =

Answer 1

Answer:

I don't know..............

Answer 2

Step-by-step explanation:

$1 - {sin}^{2} \beta - {cos}^{2} \beta$

${ \sin }^{2} \beta + { \cos}^{2} \beta = 1$

therefore ,

${ \cos }^{2} \beta - { \cos }^{2} \beta$

$= 0$