ARCSIN a
-p/2£arcsin a £p/2 sin(arcsin a)=a
arcsin (-a)= -arcsin a
a | 0 | 1/2 | Ö2/2 | Ö3/2 | 1 |
arcsin a | 0 | p/6 | p/4 | p/3 | p/2 |
SIN X= A
x=(-1)n arcsin a +pk
sin x=0 | x=pk |
sin x=1 | x=p/2+2pk |
sin x=-1 | x=-p/2+2pk |
ARCCOS a
0 £arccos a £p cos(arccos a)=a
arccos (-a)=p -arccos a
a | 0 | 1/2 | Ö2/2 | Ö3/2 | 1 |
arccos a | p/2 | p/3 | p/4 | p/6 | 0 |
COS X= A
x=± arccos a +2pk
cos x=0 | x=p/2+pk |
cos x=1 | x=2pk |
cos x=-1 | x=p+2pk |
ARCTG a
-p/2£arctg a £p/2 tg(arctg a)=a
arctg (-a)= -arctg a
a | 0 | Ö3/3 | 1 | Ö3 |
tg a | 0 | p/6 | p/4 | p/3 |
TG X= A
x=± arctg a +pk
sina*cosb=1/2[sin(a-b)+sin(a+b)]
sina*sinb=1/2[cos(a-b)-cos(a+b)]
cosa*cosb=1/2[cos(a-b)+cos(a+b)]
sina*cosb=1/2[sin(a-b)+sin(a+b)]
sina*sinb=1/2[cos(a-b)-cos(a+b)]
cosa*cosb=1/2[cos(a-b)+cos(a+b)]
sina+sinb=2sin(a+b)/2 * cos(a-b)/2
sina-sinb=2sin(a-b)/2 * cos(a+b)/2
cosa+cosb=2cos(a+b)/2 * cos(a-b)/2
cosa-cosb=-2sin(a+b)/2 * sin(a-b)/2
(a+b)2=a2+2ab+b2
(a-b)2=a2+2ab+b2
(a+b+c)2=a2+b2+c2+2ab+2ac+2bc
a2-b2=(a-b)(a+b)
(a+b)3=a3+3a2b+3ab2+b3
(a-b)3=a3-3a2b+3ab2-b3
a3+b3=(a+b)(a2-ab+b2)
a3-b3=(a-b)(a2+ab+ b2)
0 | p/6 | p/4 | p/3 | p/2 | p | 2/3p | 3/4p | 5/6p | 3/2p | |
0 | 30° | 45° | 60° | 90° | 180 | 120° | 135° | 150° | 270° | |
sin | 0 | 1/2 | Ö2/2 | Ö3/2 | 1 | 0 | Ö3/2 | Ö2/2 | 1/2 | -1 |
cos | 1 | Ö3/2 | Ö2/2 | 1/2 | 0 | -1 | -1/2 | -Ö2/2 | -Ö3/2 | 0 |
tg | 0 | 1/Ö3 | 1 | Ö3 | - | 0 | -Ö3 | -1 | -1/Ö3 | - |
ctg | - | Ö3 | 1 | 1/Ö3 | 0 | - | -1/Ö3 | -1 | -Ö3 | 0 |
sin2+cos2=1 sin=±Ö1-cos2 sin(-a)=-sina tg(-a)=-tga
tg•ctg=1 cos=±Ö1-sin2 cos(-a)=cosa ctg(-g)=-ctga
tg=1/ctg ctg=1/tg 1+tg2=1/cos2=sec2
sin2=(1-cos)(1+cos) 1+ctg2=1/sin2=cosec2 sin2a=2sina•cosa
cos2=(1-sin)(1+sin) 1-tg2/(1+tg2)=cos4-sin4 cos2a=cos2 a-sin2 a
cos/(1-sin)=1+sin/cos 1/(tg+ctg)=sin•cos tg2a=2tga/1-tga
cos(a+b)=cosa•cosb-sina•sinb sin3a=3sina-4sin3a
cos(a-b)=cosa•cosb+sina•sinb cos3a=4cos3a-3cosa
sin(a+b)=sina•cosb+cosa•sinb tg(a+b)=tga+tgb
sin(a-b)=sina•cosb-cosa•sinb 1-tga•tgb2cos2a/2=1+cosa 2sin2a/2=1-cosa
0 | p/6 | p/4 | p/3 | p/2 | p | 2/3p | 3/4p | 5/6p | 3/2p | |
0 | 30° | 45° | 60° | 90° | 180 | 120° | 135° | 150° | 270° | |
sin | 0 | 1/2 | Ö2/2 | Ö3/2 | 1 | 0 | Ö3/2 | Ö2/2 | 1/2 | -1 |
1 | Ö3/2 | Ö2/2 | 1/2 | 0 | -1 | -1/2 | -Ö2/2 | -Ö3/2 | 0 | |
tg | 0 | 1/Ö3 | 1 | Ö3 | - | 0 | -Ö3 | -1 | -1/Ö3 | - |
ctg | - | Ö3 | 1 | 1/Ö3 | 0 | - | -1/Ö3 | -1 | -Ö3 | 0 |