Respuesta :
Answer:
the pictures are attached
please see the explanation in the attached picture
 
													 
													Answer:
note:[tex]\theta =y[/tex]
Your answer is in the attachment.
we have
siny(cosy-siny)
taking - common from this
-siny(-cosy+siny)
-sin y(siny-cosy)
 
													 
													 
					                  