Identity equation: 1/sin(x) - sin(x) = cos^2(x)/sec(x)

[starTman08]

Show that each problem is an identity:

\(\displaystyle \dfrac{1}{\sin(x)}\, -\, \sin(x)\, =\, \dfrac{\cos^2(x)}{\sec(x)}\)

Help me, thank you so much.

 

[Deleted member 4993]

Show that each problem is an identity:

Help me, thank you so much.

Check your post against the problem given to you for accuracy.

The posted problem is not an identity.

 

[starTman08]

Check your post against the problem given to you for accuracy.

The posted problem is not an identity.

Thank you. My teacher tricked me.