To'g'ri burchakli uchburchaklarni yechish (davomi) — 8-sinf Geometriya test savollari

1.To'g'ri burchakli uchburchakning gipotenuzasi c=13 sm va kateti a=5 sm. b katetni toping.

• A)12 sm
• B)18 sm
• C)8 sm
• D)144 sm

2.Masalada (c=13 sm, a=5 sm) sina$=\frac{a}{c}=\frac{5}{13}$»0,3846 dan foydalanib a burchakni toping.

• A)23°
• B)67°
• C)45°
• D)13°

3.Masalada (c=13 sm, a=5 sm, a»23°) b o'tkir burchakni toping.

• A)67°
• B)23°
• C)45°
• D)77°

4.To'g'ri burchakli uchburchakning katetlari a=8 sm va b=15 sm. c gipotenuzani toping.

• A)17 sm
• B)23 sm
• C)7 sm
• D)161 sm

5.Masalada (a=8 sm, b=15 sm) tga$=\frac{a}{b}=\frac{8}{15}$»0,5333 dan foydalanib a burchakni toping.

• A)28°
• B)62°
• C)45°
• D)53°

6.Masalada (a=8 sm, b=15 sm, a»28°) b o'tkir burchakni toping.

• A)62°
• B)28°
• C)45°
• D)90°

7.To'g'ri burchakli uchburchakni gipotenuza va kateti bo'yicha yechishda ikkinchi katetni topish uchun qaysi teoremadan foydalaniladi?

• A)Pifagor teoremasidan
• B)kosinuslar teoremasidan
• C)sinuslar teoremasidan
• D)teskari Pifagor teoremasidan

8.To'g'ri burchakli uchburchakni ikkita kateti bo'yicha yechishda gipotenuza qanday topiladi?

• A)c = √(a² + b²) (Pifagor teoremasi)
• B)c = a + b
• C)c = a × b
• D)c = a/sina orqali (burchak noma'lum bo'lsa ham)

9.ABC uchburchakda ÐC=90°, gipotenuza c=25 sm, katet b=24 sm. a katetni toping.

• A)7 sm
• B)49 sm
• C)1 sm
• D)31 sm

10.Masalada (c=25 sm, b=24 sm, a=7 sm) tga$=\frac{a}{b}$ nisbatini toping.

• A)$\frac{7}{24}$
• B)$\frac{24}{7}$
• C)$\frac{7}{25}$
• D)$\frac{24}{25}$