vgl. cos x = 011
cos x = 0 ⇔ ?12
sin x = 0 ⇔ ?13
oplossing in II14
x=90°+k.360°∨x=-90°+k.180°15
cos (α − 30° ) = ½16
|sin x | = 117
√ (2.sin x) = 118
180° oplossing van ?19
2.cos x + 1 = 020
tan α = cot β21
welke FOUT ?22
welke heeft opln.?23
tan 2x = − 124
tan 
= 0 
30
goniom.vgnl._(1) 31
goniom.vgnl._(2) 32
cos 3x = 033
cos 6x = −0,5 opl.verz.34
cos 6x = −0,5 beeldptn.35
sin²x − 1=036
tan²x = tanx37
cos²x = 2cosx38
2cos²x = sin2x39
cos 2x + cos x = 040
1 + cosx + cos2x=041
sin²x + sin²2x=042
sinx+sin3x=1+cos2x43
2cos²x+3sinx = 244
sin 2x = 2.sinx45
sin 2x = sinx46
sin 2x + cos 3x = 047
cos 3x = cos x48
2x² − 2x − cos 2α = 049
kl.p.o. sin 2x + cos 2x = 050
cos² x = 0,560
sin 2x = (cos x − sin x)²61
2sin² x + sin x − 1 = 062
tan 2x + 2.tan x = 063
sin x + sin 2x + sin 3x = 064
tan 2x = 2 ∨ tan = 2 65
sin 2x = cos 4x66
tan (3x − 10°).tan 40° = 167
2.cos² (3x+30°) = 168
sin x . cos x . tan x = 069
tan x < cot x 70
1 + cos x + cos 2x = cos² 80
cosx.cos2x = sinx.sin2x81
sinx−sin 3x + 2 = 082
gon.vgl.(sin,cos)83
tan x + 2cot x = 384
1+sinx+cosx+sin2x+cos2x=085
1+sinx+cosx+tanx=086
cos x + 
sin x = 187
1 + sin 2x = (cos 3x + sin3x) (a)88
1 + sin 2x = (cos 3x + sin3x)² (b)89
sin x + sin 2x + sin 3x =...90
sin⁴x-2sin²x.cos²x=3cos⁴x91
cos 2x + cos x = 092
cos2 x + cos2 2x + cos2 3x = 193
1 − cos 6x = tan 3x94
2 − 4.sin² x − 
= 095
2.sin x − sin²x = cos x 96
(tan²x − 1).(cot²x − 1) = −12 97
4.sin³x + 2.sin²x − 2.sinx − 1 = 098
cos 2α , cos 4α99
7cos x+3sin x = 5A0
3cos x+4sin x = 5A1
2sin x+3cos x+1 = 0A2
cos x + sin x = 
A3
a.cos x+b.sin x = cA4
cos x . cos 4x = cos 5xA5
cos x . cos 2x = cos 3x A6
f(x) = sin x + sin 2x A7
sinx+cosx+tanx+...=7