1.
2.
3.
.
4.
.
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47
a
- ning qaysi chorakka tegishliligiga qarab "+" yoki "-" ishoradan
biri olinadi.
Masalan: Agar
0;
2
p
a
æ
ö
Îç
÷
è
ø , ya`ni I-chorakda bo`lsa,
1- formulada
+
olinadi; agar
3
;
2
p
a
p
æ
ö
Îç
÷
è
ø , ya`ni III-chorakda
bo`lsa, 1- formulada
-
olinadi.
Qo'shish formulalari
1.
(
)
.
cos
cos
cos
sin
sin
a
b
a
b
a
b
+
=
-
2.
(
)
.
cos
cos
cos
sin
sin
a
b
a
b
a
b
-
=
+
3 .
(
)
.
sin
sin
co s
co s
sin
a
b
a
b
a
b
+
=
+
4 .
(
)
.
sin
sin
co s
co s
sin
a
b
a
b
a
b
-
=
-
5 .
(
)
1
tg
tg
tg
tg
tg
a
b
a
b
a
b
±
±
=
×
m
.
1
6.
(
)
ctg
ctg
ctg
ctg
ctg
a
b
a b
a
b
×
±
=
±
m
.
Karrali burchaklar
1.
2
2
.
sin
sin cos
a
a
a
=
2
2
2. 2
cos
cos
sin
a
a
a
=
-
2
2
3.
2
.
1
tg
sin
tg
a
a
a
=
+
2
2
1
4.
2
.
1
tg
cos
tg
a
a
a
-
=
+
2
2
5.
2
2
1
1 2
.
cos
cos
sin
a
a
a
=
- = -
2
2
6. 2
.
1
tg
tg
tg
a
a
a
=
-
2
1
7.
2
.
2
ctg
ctg
ctg
a
a
a
-
=
2
8. 2
.
tg
ctg
tg
a
a
a
=
-
3
9. 3
3
- 4
.
sin
sin
sin
a
a
a
=
3
10. 3
4
- 3
cos
cos
cos
a
a
a
=
3
2
3
11. 3
.
1 3
tg
tg
tg
tg
a
a
a
a
-
=
-
3
2
3
12.
3
.
1 3
ctg
ctg
ctg
ctg
a
a
a
a
-
=
-
(
)
3
13.
4
4
-
8
.
sin
cos
sin
sin
a
a
a
a
=
×
4
2
14. 4
8
8
1.
cos
cos
cos
a
a
a
=
-
+
(
)
2
2
4
4
1
15. 4
.
1 6
tg
tg
tg
tg
tg
a
a
a
a
a
× -
=
-
+
(
)
4
2
2
2
6
1
16. 4
.
4
1
ctg
ctg
ctg
ctg
ctg
a
a
a
a
a
-
+
=
×
-
Darajasini pasaytirish
1.
2
1
2
2
cos
sin
a
a
-
=
. 2.
2
1
2
2
cos
cos
a
a
+
=
.
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3.
3
3
3
4
sin
cos
sin
a
a
a
-
=
. 4.
3
3
cos 3
4
cos
cos
a
a
a
+
=
.
5.
2
1
2
1
2
cos
tg
cos
a
a
a
-
=
+
. 6.
2
1
2
1
2
cos
ctg
cos
a
a
a
+
=
-
.
7.
4
4
sin
2
cos
cos
a
a
a
-
= -
. 8.
4
4
2
cos
sin
cos
a
a
a
-
=
.
9.
(
)
4
1
4
4
2
3 .
8
sin
cos
cos
a
a
a
=
-
+
10.
(
)
4
1
4
4
2
3 .
8
cos
cos
cos
a
a
a
=
+
+
11.
4
4
3
1
4 .
4
4
cos
sin
cos
a
a
a
+
= +
12.
6
6
5
3
4 .
8
8
cos
sin
cos
a
a
a
+
= +
Yarim burchak uchun formulalar
1)
2
2
1
2
2
cos
sin
a
a
+
=
; 2)
2
2
2
sin
sin
co s
a
a
a
=
;
3)
2
2
2
2
cos
cos
sin
a
a
a
=
-
; 4)
1
2
2
cos
sin
a
a
-
= ±
;
5)
1
2
2
cos
cos
a
a
+
= ±
; 6)
1
2
1
cos
tg
cos
a
a
a
-
= ±
+
;
7)
1
2
1
cos
ctg
cos
a
a
a
+
= ±
-
; 8)
2
1
2
2
cos
cos
a
a
+
=
;
9)
2
1
2
2
cos
sin
a
a
-
=
; 10)
2
1
2
1
cos
tg
cos
a
a
a
-
=
+
;
11)
2
1
2
1
cos
ctg
cos
a
a
a
+
=
-
; 12)
2
2
1
2
2
tg
ctg
a
a
×
=
;
13)
1
2
1
cos
sin
ctg
sin
cos
a
a
a
a
a
+
=
=
-
; 14)
1
2
1
cos
sin
tg
sin
cos
a
a
a
a
a
-
=
=
+
.
Trigonometrik funksiyalarni yarim burchak tangensi
orqali ifodasi
1)
2
2
1
2
2
sin
tg
tg
a
a
a
æ
ö
=
+
ç
÷
è
ø
; 2)
2
2
1
1
2
2
cos
tg
tg
a
a
a
æ
ö æ
ö
=
-
+
ç
÷ ç
÷
è
ø è
ø
;
3)
2
2
1
2
2
tg
tg
tg
a
a
a
æ
ö
=
-
ç
÷
è
ø
; 4)
2
1
2
2
2
c tg
tg
tg
a
a
a
æ
ö
=
-
ç
÷
è
ø
.
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w
w .A
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w
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Ko'paytmani yig'indiga keltirish
1.
(
)
(
)
1
2
sin
cos
sin
sin
a
b
a b
a b
×
=
+
+
-
é
ù
ë
û .
2.
(
)
(
)
1
2
cos
cos
cos
cos
a
b
a b
a b
×
=
+
+
-
é
ù
ë
û
.
3.
(
)
(
)
1
2
sin
sin
cos
cos
a
b
a b
a b
×
=
-
-
+
é
ù
ë
û .
4.
tg
tg
tg
tg
tg
tg
ctg
ctg
ctg
ctg
a
b
b
a
a
b
a
b
b
a
+
-
×
=
=
+
-
.
5.
ctg
ctg
ctg
ctg
ctg
ctg
tg
tg
tg
tg
a
b
b
a
a
b
a
b
a
b
+
-
×
=
=
+
-
.
6.
tg
ctg
tg
ctg
tg
ctg
ctg
tg
tg
ctg
a
b
a
b
a
b
a
b
b
a
+
-
×
=
=
+
-
.
7.
1
1
2
2
4
...
2
2
n
n
n
sin
co s
co s
co s
co s
sin
a
a
a
a
a
a
+
+
×
×
× ×
=
.
8.
2
3
1
...
2
1
2
1
2
1
2
1
2
n
n
cos
cos
cos
cos
n
n
n
n
p
p
p
p
×
×
× ×
=
+
+
+
+
.
Masalan:
2
2
1
) ,
5
2 2 1,
2
5
5
2
a
cos
cos
n
p
p
×
=
= × +
= ;
7
2
7
1
) ...
, 15
2 7 1,
7
15
15
15
2
b
cos
cos
cos
n
p
p
p
×
× ×
=
= × +
=
.
9.
1
2
...
2
4
2
2
2
n
n
n
sin
co s
co s
co s
co s
sin
a
a
a
a
a
a
+
×
×
× ×
=
.
Yig’indini ko’paytmaga keltirish
1.
2
2
2
sin
sin
sin
cos
a b
a b
a
b
+
-
+
=
×
. 2.
2
2
2
sin
sin
sin
cos
a b
a b
a
b
-
+
-
=
×
.
3.
2
2
2
cos
cos
cos
cos
a b
a b
a
b
+
-
+
=
×
. 4.
2
2
2
cos
cos
sin
sin
a b
a b
a
b
+
-
-
=-
×
.
5.
(
)
sin
tg
tg
cos
cos
a b
a
b
a
b
+
+
=
×
. 6.
(
)
sin
tg
tg
cos
cos
a b
a
b
a
b
-
-
=
×
.
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w .A
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w
w .A
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