10sin (x + y) 11cos ( α + β )
12sin2x / sinx 13cos² 2α − sin² 2α
14sin 75° = ? 15sin² α − cos² α
164 sin4x cos4x 17cos 8x − 1 = ?
18sin x . cos x 19(cos x + sin x)²
21gelijk aan 1 ? 40cosx=0,8cos2x=?
22cos 2(α + β) 41\(\large\frac{\sin^22x\,-\,1}{2\sin^2x\,-\,1}\) new
23\(\large\frac {\sin 2x} {\sin^2x} \) 24\(\large\frac {1\,-\,\cos 2\alpha} {1\,+\,\cos 2\alpha} \)
25sin² x + cos² x + cot² x
26meetkundige rij ?
421 − 2.cos 2x + cos² 2x
26sin² 2x − cos²2x
27cos30°.cos12°+sin30°.sin12°
28tan x = ½ ⇒ tan 2x = ?
29cos² x.sin² x + sin² x.cos² x
303cos² 3α − 3sin² 3α
43cos 2α ? 44cotx − tan x
45cot (x+45°) 46vreemde eend
472 − 2.cos 2x 48cos105°.cos165°
492 + 2.cos 2x 50cos⁴ 4x - sin⁴ 4x
51sin4 x + cos4 x 52cos4 x − sin4 x
53cot x = ? 54sin 15°.cos 75°
554.cos2 56\(\frac{\sin 70^{\circ}}{\sin 20^{\circ}}-\frac{\cos 70^{\circ}}{\cos 20^{\circ}}\)
57\(\frac{1\,+\,\cos 2\alpha }{\sin 2\alpha }\) 79\(\large\frac {\sin 2x} {1+\,\cos 2x} \)
59\(\frac {\cos 2\alpha} {\cos \alpha} \) 60\(\frac {2\cot \alpha} {1\,+\,\cot^2 \alpha} \)
61cos 15° 621 − cos 3x
63cos 2x 64tan x + cot x =
65tan 75° 66tan x + cot x =
67  > 1 ? 68tan x − cot x =
69 1 1 1 1 2 2 α 70 α β γ
71\(\frac{\cos x}{\sin x}-\frac{\cos 2x}{\sin 2x}\) 72\(\frac{\sin 18^\circ \cdot \,\sin 72^\circ }{\sin 36^\circ} \)
73\(\frac{\sin 40^\circ\,\cdot\:\sin 50^\circ}{\cos 10^\circ}\) 74\(\frac{\sin\alpha\:-\,2\sin^3\alpha }{2\cos^3\alpha\:-\,\cos\alpha }\)
77\(\large\frac {1-\sin^2 2x} {2\cos^2x -1} \) 76\(\frac{0\,+\,\sin\alpha\,+\,\sin 2\alpha}{1\,+\,\cos\alpha\,+\,\cos 2\alpha}\)
78goniom.formules
80sin x = 0,8 ⇒ sin 2x =
81cosx−sinx=¼ ⇒cosx.sinx=?
82(tan 20° + cot 20° ).sin 40°
83cos 285°.cos 195°
84cos 15°. cos 30°. cos 75° =
85sin (60° + x) − sin (60°− x) =
86tan 15° + tan-1 15°
87sinx.cosx + sin 2x = 1
88tan (45°+ x) − tan (45°− x)=
89tan x + cot x = 4 ⇒ sin 2x
91cos 45°.cos 15° + sin 45°.sin 15°
92oppervlakte rechth.driehoek
95cot α − tan α
96(sin70°/sin20°)+(cos70°/cos20°)
97tan(α+β)=37∧tanα=27 ⇒ tan β
98alle 4 correct ?
99sin α =  ⇒ cos 2α = ?
A0(2 sin 41°− cos 11°) / sin 11°
A2opp. gelijkbenig trap.
A3tan 75° + cot 75°
A4tan 75° − cot 75°
A5cot(α+β)
A6meetkundige rij
A7\(\frac{\sin 8x}{\cos x.\cos 2x.\cos 4x.\sin x}\)
A8\(\frac{\sin x}{\sin 2x}=\frac 34\Rightarrow \cos x = ?\)
A9sin 3α = ?
B0\(\boldsymbol{\frac{\sin \alpha}{1+\cos\alpha} }\)
B1hoeveel = cos α ?
B2gelijk_aan_1?
B3\( \sin\alpha=\frac13\Rightarrow \cos 2\alpha=? \) new
C0zéér moeilijk
C1 β α gricha - v7926 - 24.7.2022 tan α + tan β
C2 tan   = new
C3sinx + cosx = 1,2
C5sinx=cosx+cosx ⇒ sinx.cosx=?
C6tan 15° + tan− 1 15°
C7tan 105°
C8cos⁴2α-6cos²2α.sin²2α+sin⁴2α
D0 =
D1\(\tan\frac x2="2" -\sqrt 3 \Rightarrow \tan x = ?\)
D2verhouding zijden 3hoek
D3hoogte in 3hoek
D4tan20°.tan40°.tan60°.tan80°
D6In Δ is \(\frac{c\,-\,a.\cos B}{a.\sin B} =\)
D7 2 2 1 1 1 1 α α β β gricha - v7915 - 1.11.2022
D8 A B C D P x 3 4 M gricha - v8090 - 26.7.2022
E0tan = 2- ⇒ sin x = ?
E1sin2α, tan2α
E2\(\frac{1}{\sin^4 15^\circ}-\frac{1}{\cos^4 15^\circ} \)
E3tan x + tan(90°... + tan(270° + x)
E4cos x.cos  2x (kort én moeilijk)
E5cos 2x uit form. met sin 2x
E6soort vgl. met cos 2α
E7tan 20° + tan 25°
E8sin 30°/sin10°   − cos30°/cos10°
E9 α gricha - v7954 - 1.8.2022
F0sin α = 4/5 ⇒ tan 2α = ?
F1 A B C D 1 2 x = ?
➔ 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





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