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Law of Sines & Cosines

Authored by Shannon Barber

Mathematics

8th Grade - University

Used 7+ times

Law of Sines & Cosines
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following shows the Law of Sines?

sin⁡Aa=sin⁡Bb=sin⁡Cc\frac{\sin A}{a}=\frac{\sin B}{b}=\frac{\sin C}{c}  

a2=b2+c2−2bc(sin⁡A)a^2=b^2+c^2-2bc\left(\sin A\right)  

a2+b2=c2a^2+b^2=c^2  

SOH CAH TOA

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following formulas shows the Law of Cosines?

c2=a2+b2−4ab(cos⁡C)c^2=a^2+b^2-4ab\left(\cos C\right)

c2=a2−b2+2ab(cos⁡C)c^2=a^2-b^2+2ab\left(\cos C\right)  

c2=a2+b2−2ab(cos⁡C)c^2=a^2+b^2-2ab\left(\cos C\right)  

cos⁡Aa=cos⁡Bb=cos⁡Cc\frac{\cos A}{a}=\frac{\cos B}{b}=\frac{\cos C}{c}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Use the Law of Sines to find the value of x to the nearest tenth.

9.5

14.6

26.1

15.1

4.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

Media Image

Use the Law of Sines to find the value of x to the nearest tenth.

(a)  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Use the Law of Sines to find the value of x to the nearest tenth.

58.5

37.5

57.9

50

6.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

Media Image

Use the Law of Sines to find the value of x to the nearest tenth.

(a)  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Use the Law of Cosines to find the value of x to the nearest tenth.

17.7

18.3

15.8

16.9

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