Question

verify indentity

Answer 1

\[\sin \theta+\cos \theta=\frac{2\sin^2\theta-1}{\sin \theta-\cos \theta}\]

Answer 2

1= cos^2 + sin^2

Answer 3

sin^2 - cos^2
----------
sin - cos

Answer 4

sin + cos

Answer 5

Errata: Step 3:
\[[\cos2\theta(\cos \theta + \sin \theta)]/(\cos \theta - \sin \theta)(\cos \theta + \sin \theta)\]