\(\frac{\sin 75^\circ\,+\:\sin 15^\circ}{\cos 75^\circ\,+\:\cos 15^\circ}\)11
\(\frac{\sin p\:+\:\sin q}{\cos p\:-\:\cos q} \) 
12
cos 75° − cos 15°13
sin75°− sin15°14
sin75°− sin15° bis15
sin20°+ sin40°16
cos75° − cos15°17
sin285° + cos75°18
SIMPSON_(1)19
SIMPSON_(2)20
SIMPSON_(3)21
\(\large\frac{\sin x\:+\:\sin y}{\cos x\:+\:\cos y} \)22
\(\large\frac{\cos 2x}{1\,-\,\tan^2x} \)23
\(\large\frac{\cos 4x\:-\:1}{\sin x\,-\,\sin 3x}\)24
sin(2α+2β) / (sin2α + sin2β)25
sin 20° + 2.sin40° = 26
cos(x+120°)+cos(x-120°) =27
max cosA+cosB+cosC28
sin (60° + x) − sin (60°− x) = 30
SIMPSON_431
rico en ?SIMPSON?32
sin A = cos B + cos C in Δ33
(sinB+sinC)/sinA = cot A/2 ⇒ ?34
(sin α + cos α):(sin α − cos α)35
sin15°.sin30°.sin45°.sin60°.sin75°36
(cos15°+cos45°+cos75°)²