Prove that (sin^2 73° + sin^2 17°)/(cos^2 28°+cos^2 62°)

Question

Prove that \(\cfrac{(sin^273^\circ + sin^217^\circ)}{(cos^228^\circ+cos^262^\circ)}\)

Prove that (sin² 73° + sin² 17°)/(cos² 28°+cos² 62°)

Answer 1

\(\cfrac{(sin^273^\circ + sin^217^\circ)}{(cos^228^\circ+cos^262^\circ)}\) = 1

LHS = \(\cfrac{sin^273^\circ + sin^217^\circ}{cos^228^\circ+cos^262^\circ}\)