10gsin (x + y) 11gcos ( α + β )
12gsin2x / sinx 13gcos² 2α − sin² 2α
14gsin 75° = ? 15gsin² α − cos² α
16g4 sin4x cos4x 17gcos 8x − 1 = ?
18gsin x . cos x 19g(cos x + sin x)²
20gcos 2(α + β) 21ggrondformule nieuw
22g\(\large\frac {\sin 2x} {\sin^2x} \) 23g\(\large\frac {1\,-\,\cos 2\alpha} {1\,+\,\cos 2\alpha} \)
24ggelijk aan 1 ? 25ocosx=0,8→cos2x=?
26gsin² x + cos² x + cot² x
27gmeetkundige rij ?
28o1 − 2.cos 2x + cos² 2x
29gsin² 2x − cos²2x
30gcos30°.cos12°+sin30°.sin12°
31gtan x = ½ ⇒ tan 2x = ?
32gcos² x.sin² x + sin² x.cos² x
33g3cos² 3α − 3sin² 3α
34ocos 2α ? 35ocotx − tan x
36ocot (x+45°) 37ovreemde eend
38o2 − 2.cos 2x 39ocos105°.cos165°
40o2 + 2.cos 2x 50ocos⁴ 4x - sin⁴ 4x
51osin4 x + cos4 x 52ocos4 x − sin4 x
53ocot x = ? 54osin 15°.cos 75°
55o4.cos2 alphaop2 56o\(\frac{\sin 70^{\circ}}{\sin 20^{\circ}}-\frac{\cos 70^{\circ}}{\cos 20^{\circ}}\)
57o\(\frac{1\,+\,\cos 2\alpha }{\sin 2\alpha }\) 58o\(\large\frac {\sin 2x} {1+\,\cos 2x} \)
59o\(\frac {\cos 2\alpha} {\cos \alpha} \) 60o\(\frac {2\cot \alpha} {1\,+\,\cot^2 \alpha} \)
61ocos 15° 62o1 − cos 3x
63ocos 2x 64otan x + cot x =
65otan 75° 66otan x + cot x =
67o  > 1 ? 68otan x − cot x =
69o 1 1 1 1 2 2 α 70o α β γ
71o\(\frac{\cos x}{\sin x}-\frac{\cos 2x}{\sin 2x}\) 72o\(\frac{\sin 18^\circ \cdot \,\sin 72^\circ }{\sin 36^\circ} \)
73o\(\frac{\sin 40^\circ\,\cdot\:\sin 50^\circ}{\cos 10^\circ}\) 74o\(\frac{\sin\alpha\:-\,2\sin^3\alpha }{2\cos^3\alpha\:-\,\cos\alpha }\)
75o\(\large\frac {1-\sin^2 2x} {2\cos^2x -1} \) 76o\(\frac{0\,+\,\sin\alpha\,+\,\sin 2\alpha}{1\,+\,\cos\alpha\,+\,\cos 2\alpha}\)
77o\(\large\frac{\sin^22x\,-\,1}{2\sin^2x\,-\,1}\) nieuw 78ogoniom.formules
80osin x = 0,8 ⇒ sin 2x =
81ocosx−sinx=¼ ⇒cosx.sinx=?
82o(tan 20° + cot 20° ).sin 40°
83ocos 285°.cos 195°
84ocos 15°. cos 30°. cos 75° =
85osin (60° + x) − sin (60°− x) =
86otan 15° + tan-1 15°
87osinx.cosx + sin 2x = 1
88otan (45°+ x) − tan (45°− x)=
89otan x + cot x = 4 ⇒ sin 2x
90ocos 45°.cos 15° + sin 45°.sin 15°
91ooppervlakte rechth.driehoek
92ocot α − tan α
93o(sin70°/sin20°)+(cos70°/cos20°)
94otan(α+β)=37∧tanα=27 ⇒ tan β
95oalle 4 correct ?
96osin α = v3op3 cos 2α = ?
97o(2 sin 41°− cos 11°) / sin 11°
98oopp. gelijkbenig trap.
99otan 75° + cot 75°
A0otan 75° − cot 75°
A1ocot(α+β)
A2omeetkundige rij
A3o\(\frac{\sin 8x}{\cos x.\cos 2x.\cos 4x.\sin x}\)
A4o\(\frac{\sin x}{\sin 2x}=\frac 34\Rightarrow \cos x = ?\)
A5osin 3α = ?
A6o\(\boldsymbol{\frac{\sin \alpha}{1+\cos\alpha} }\) nieuw
A7ohoeveel = cos α ? nieuw
A8ogelijk_aan_1?
A9o\( \sin\alpha=\frac13\Rightarrow \cos 2\alpha=? \) nieuw
C0rzéér moeilijk
C1r β α gricha - v7926 - 24.7.2022 tan α + tan β
C2r tan xop2  = nieuw
C3rsinx + cosx = 1,2
C5rsinx=cosx+cosx ⇒ sinx.cosx=?
C6rtan 15° + tan− 1 15°
C7rtan 105°
C8rcos⁴2α-6cos²2α.sin²2α+sin⁴2α
D0rrv3 =
D1r\(\tan\frac x2="2" -\sqrt 3 \Rightarrow \tan x = ?\)
D2rverhouding zijden 3hoek
D3rhoogte in 3hoek
D4rrtan20°.tan40°.tan60°.tan80°
D6rIn Δ is \(\frac{c\,-\,a.\cos B}{a.\sin B} =\)
D7r 2 2 1 1 1 1 α α β β gricha - v7915 - 1.11.2022
D8r A B C D P x 3 4 M gricha - v8090 - 26.7.2022
E0rtan xop2 = 2-v3 ⇒ sin x = ?
E1rsin2α, tan2α
E2r\(\frac{1}{\sin^4 15^\circ}-\frac{1}{\cos^4 15^\circ} \)
E3rtan x + tan(90°... + tan(270° + x)
E4rcos x.cos  2x (kort én moeilijk)
E5rcos 2x uit form. met sin 2x
E6rsoort vgl. met cos 2α
E7rtan 20° + tan 25°
E8rsin 30°/sin10°   − cos30°/cos10°
E9r α gricha - v7954 - 1.8.2022 nieuw
F0rsin α = 4/5 ⇒ tan 2α = ? nieuw
F1r A B C D 1 2 x = ? nieuw
F2r A B C P Q 3 4 ? hartbeat.gifnew


Radialen (geen verwante hoeken)

  radians (no related angles)


Verwante hoeken

  related angles


Optellingsformules en
  verdubbelingsformules

  sin(α ± β),.., cos 2x, ..., 1 ± cos 2α


Formules van Simpson

  Simpson's Formulas


Grafiek - amplitude - periode

  graph - amplitude - period


Goniometrische vergelijkingen

  trigonometric equations


Cyclometrische functies

  inverse trigonometric functions (cyclometric functions)


Maximum of minimum van
  goniometrische uitdrukkingen

  maximum or minimum of trigonometric expressions






→ telling vanaf 1 aug. 2024 ←