Trigonometriskās sakarības laukuma aprēķināšan Lesson

7 Slides • 7 Questions

1

Trijstūra un paralelograma laukums

Pašapmācība

2

Sasniedzamais rezultāts

Prot pielietot šaurā leņķa trigonometriskās funkcijas trijstūra laukuma aprēķināšanā
Prot pielietot šaurā leņķa trigonometriskās funkcijas paralelograma laukuma aprēķināšanā

3

TRIJSTŪRA LAUKUMA APRĒĶINĀŠANA

$S=\frac{1}{2}\cdot a\cdot b\cdot\sin\alpha$ ,

kur $a$ un $b$ ir divas trijstūra malas,
$\alpha$ ir leņķis starp tām

4

5

Multiple Select

1

$S=25\sqrt{3}dm^2$

2

$S=50\sqrt{3}dm^2$

3

$S=25\sqrt{2\ }dm^2$

4

$S=50\sqrt{2}dm^2$

6

Multiple Select

Aprēķini trijstūra ABC laukumu, ja $AB=16\ m,\ BC=23\ m$ $un\ \angle ABC=30^0$

1

$92\ m^2$

2

$123\ m^2$

3

$16\ m^2$

4

$23\ m^2$

7

PARALELOGRAMA LAUKUMA APRĒĶINĀŠANA

$S=a\cdot b\cdot\sin\alpha$ ,
kur $a$ un $b$ ir paralelograma malas,
$\alpha\$ ir leņķis starp tām

8

9

Multiple Select

1

$S=40\sqrt{2}cm^2$

2

$S=80\sqrt{2}\ cm^2$

3

$S=10\sqrt{2}\ cm^2$

4

$S=8\sqrt{2}\ cm^2$

10

Multiple Select

Paralelograma malas ir 8 dm un 14 dm garas, leņķis starp tām ir 30° liels. Aprēķini paralelograma laukumu.

1

$56\ dm^2$

2

$112\ dm^2$

3

$56\sqrt{3}\ dm^2$

4

$112\sqrt{3}\ dm^2$

11

Open Ended

Vai tu sasniedzi stundas rezultātu?

Type response here

12

Open Ended

Uzraksti, kādas grūtības tev bija uzdevumu risināšanā?

Type response here

13

Open Ended

Uzraksti man jautājumu.

Type response here

14

Trijstūra un paralelograma laukums

Pašapmācība

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