8 sinf Algebra Tekislikda tog’ri burchakli koordinatalar sistemasi. Funksiya tushunchasi


O’tkir burchakning sinusi , kosinusi , tangensi va kotangensi


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8-sinf Algebra va Geometriya

8. O’tkir burchakning sinusi , kosinusi , tangensi va kotangensi


1. ABC to’g’ri burchakli uchburchakda AB gipotenuza 1,3 ga , AC katet esa 0,5 ga teng . SinA ni toping .
A) B) C) D)
2. To’g’ri burchakli uchburchakda o’tkir burchakning kosinusi qaysi biriga teng bo’la olmaydi ?
A) B) 4- C) D)
3. To’g’ri burchakli uchburchakda o’tkir burchak sinusi qaysi biriga teng bo’la olmaydi ? A) B) C) D)
4. Gipotenuzasi AB=10 bo’lgan to’g’ri burchakli uchburchakda
bo’lsa , AC katetni toping . A)5 B) 6 C) 7 D) 8
5. Gipotenuzasi AC bo’lgan to’g’ri burchakli uchburchakda
ga , BC katet esa 15 ga teng bo’lsa , AC gipotenuzani toping.

  1. 18 B) 20 C) 24 D) 25

6. To’g’ri burchakli ABC uchburchakda AB gipotenuza bo’lib , bo’lsa , ni toping . A) B) 3 C) D) 1,5
7. To’g’ri burchakli ABC uchburchakda AB gipotenuza bo’lib ,tgA=1 bo’lsa, ni toping. A) B) C) D)
8. ABC to’g’ri burchakli uchburchakda AB gipotenuza ga , AC katet ,
BC kateti ga teng . Quydagi qaysi munosabat noto’g’ri ekanini toping .

  1. B) D)

9. To’g’ri burchakli uchburchak katetlari 14 va 48 ga teng bo’lsa, uning eng kichik balandligini toping. A)13,44 B) 13,28 C)11,8 D)12,8
10. ABCD to’g’ri to’rtburchakda ga , ga teng . toping. A) 104 B) 114 C) 124 D) 134
1-mavzu:
1-C 2-A 3-C 4-D 5-C 6-B 7-C 8-B 9-A 10-B
2-mavzu:
1-B 2-C 3-A 4-D 5-C 6-C 7-A 8-B 9-A 10-C
3-mavzu:
1-A 2-D 3-A 4-D 5-B 6-B 7-A 8-C 9-D 10-D
4-mavzu:
1-C 2-D 3-B 4-B 5-A 6-B 7-D 8-C 9-A 10-C
5-mavzu:
1-C 2-D 3-B 4-C 5-B 6-D 7-D 8-D 9-B 10-B
6-mavzu:
1-C 2-C 3-A 4-A 5-D 6-B 7-A 8-C 9-D 10-A
7-mavzu:
1-A 2-B 3-D 4-C 5-D 6-C 7-D 8-C 9-A 10-D
8-mavzu:
1-C 2-C 3-D 4-D 5-D 6-A 7-C 8-B 9-A 10-D
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