Law of Cosines — Quiz

Question 1

What is the value of n to the nearest whole number?

Revolt · Accepted Answer

22

Question 2

What is the value of n to the nearest whole number?

Revolt · Accepted Answer

13

Question 3

What is x , the length of the diagonal, to the nearest whole number?

Revolt · Accepted Answer

16

Question 4

Which equation correctly uses the law of cosines to solve for the missing side length of △PQR ?

Revolt · Accepted Answer

p squared is equal to 6 squared plus 8 squared minus 2 6 8 cosine open paren 39 degrees close paren

Question 5

What additional information did Abby know that is not shown in the diagram?

Revolt · Accepted Answer

m angle cap n is equal to 37 degrees and n is equal to 31

Question 6

On which triangle can the law of cosines be used to find the length of an unknown side? Law of cosines: A squared is equal to b squared plus c squared minus 2 b c cosine cap A

Revolt · Accepted Answer

Image with description Triangle Q R S is shown. The measure of the angle R S Q is 57 degrees. The length of the sides R S, S Q, and Q R are labeled as 7, 12, and s.

Question 7

On which triangle can the law of cosines be applied once to find an unknown angle measure? Law of cosines: A squared is equal to b squared plus c squared minus 2 b c cosine cap A

Revolt · Accepted Answer

Image with description Triangle X W Y is shown. The length of the sides X Y, Y W, and W X are 8, 16, and 10.

Question 8

To the nearest whole degree, what is the measure of angle cap z ?

Revolt · Accepted Answer

51 degrees

Question 9

To the nearest whole degree, what is the measure of angle cap q ?

Revolt · Accepted Answer

44 degrees

Question 10

What is the measure of angle cap c to the nearest whole degree?

Revolt · Accepted Answer

77 degrees

Law of Cosines — Quiz Answers

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