Question

Show that cos2x-cos4x/sin2x+sin4x= tanx

Answer 1

hi,
r u familiar with these ?
\[\cos A - cosB = 2\sin \frac{ A+B }{2 }\sin \frac{ B-A }{2 }\]
\[sinA + sinB = 2\sin\frac{A+B }{ 2 }\cos \frac{ A-B }{2 }\]

Answer 2

Oh yes! Thank u so much!:)

Answer 3

u r welcome!!