1. x=sin60°, y=cos(-600°), z=ctg(31п/6) sonlarni kamayish tartibida yozing

Trigonometriya
1. x=sin60°, y=cos(-600°), z=ctg(31п/6) sonlarni kamayish tartibida yozing.
A)z>x >y B) x > y >z C) y > z >x D) z > y > x
2. sin²a+2cos²a ning eng katta qiymatini toping.
A) 1,2 B) 1,4 C) 1,6 D) 2
3.Tenglamani yeching. Sin(3x-п/2)=0
A)п/3•n, n € Z B) п/6+п/3•n, n € Z
C)3пn, n € Z D)п/2 +п/3•n, n € Z
4.Tenglamani yeching. ctg(2x+п/6)=√(3)
A)пn/2, n € Z B) п/2 C) пn, n € Z D)п/2+ пn/4 n € Z
5.Tenglamaning [0;2п] kesmada nechta ildiz bor?
sin2x=(cosx-sinx)² A)4 B)8 C)2 D)1
6.Tenglamani yeching.
sinx•cos2x+cosx•sin2x=0 n € Z
A) пn/4 B) пn/3 C) пn/2 D)пn/5
7.Tenglamani yeching.sin 6x+sin 2x=sin 4x n € Z
A)пn/4 B)п/3+2пn C)-п/3+пn D)пn/4; ±п/6+пn
8.Tenglama [-2п;2п] oraliqda nechta yechimga ega?
(cos²x-cosx) / sinx=0 A)6 B) 4 C)3 D) 2
9. Tengsizlikni yeching. sin²3x-cos²3x≤-√(3)/2 n € Z
A)[-п/36+пn/3; п/36 + пn/3] n € Z B)(-п/36+пn/3; п/36 + пn/3) n € Z
C)[-п/6+2пn; п/6+2пn] n € Z D) (-п/6+2пn; п/6+2пn] n € Z
10.Tengsizlikni yeching. cos5x•cos4x+sin5x•sin4x< √(3)/2
A)п/3+2пnC)п/3+пn11.Tenglamani yeching. 4cos²2x-1=cos4x
A) п/4+ пn/2, n € Z B)пn/2, n € Z C)п/6+пn/2, n € Z D)п/3+пn/2, n € Z
12.Tenglamaning [-4п;4п] kesmaga tegishli ildizlari nechta?
cos2x+cos5x=6 A)4 B)5 C)6 D)8
13.Tenglamani yeching.(1+cosx)•tg(x/2)=0
A)пk, k € Z B) п+2пk, k€ Z C)2пk, k€ Z D)п+пk, k€ Z
14. Agar sinb+cosb=1,35 bo‘lsa, b burchakka mos keluvchi nuqta qaysi chorakda joylashgan?
A)III B) I C) II D) IV
15.Hisoblang. sin14°+cos14°•tg38°-1
A)2 B)0 C)-1 D)1
16.Agar m=cos2° bo‘lsa, 1-tg²178° / tg²178°+1 ni m orqali ifodalang.
A)1-2m² B)2m²-1 C)4m D)2m
17.Agar 0A)0 B)√(3) C)√(3)/3 D)1
18.Agar cos34°=a va sin31°=b bo‘lsa, sin22°+sin28° ni a va b orqali ifodalang.
A)2(b²-a²) B) a²-b² C) b²-a² D) 2(a²-b²)
19.Agar sina+cosa=√(2) bo‘lsa, tg³a+ctg³a ning qiymatini toping.
A)3 B)4 C)1 D)2
20.Agar tga=5/6 bo‘lsa, sina+sin3a+sin5a+sin7a / cosa-cos3a+cos5a-cos7a ning qiymatini toping.
A) 5/6 B) 5/4 C)6/5 D)-4/5

BARCHAGA OMAD!