Is there anything wrong with my solution?

[Misr]

Homework Statement

Cos X *[Cosec (270+X)][tan X] = ....

Homework Equations

Cosec (270+X) = - sec X
Cos X * sec X = 1

The Attempt at a Solution

Cos X * -Sec X * tan X = - tan X

then the solution is
Cos X *[Cosec (270+X)][tan X] = - tan X

Is it right?Can it has another solution??

Thanks

 

[ehild]

It is right.

ehild

 

[Misr]

Great Thanks