AnswersGeometryRelationships of Right Triangles: Trigonometry

Practice Test Answers

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Given right triangle QRS , what is the value of sine of open paren 30 degrees close paren ?

A
the fraction with numerator square root of 3 and denominator 3
B
the fraction with numerator square root of 3 and denominator 2
C
1 half
D
2 over 1
2
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Which equation can be used to find the measure of angle LKJ ?

A
cosine inverse of open paren 8 point 9 over 10 point 9 close paren is equal to x
B
sine inverse of open paren 8 point 9 over 10 point 9 close paren is equal to x
C
sine inverse of open paren 10 point 9 over 8 point 9 close paren is equal to x
D
cosine inverse of open paren 10 point 9 over 8 point 9 close paren is equal to x
3

What is the length of one leg of the triangle?

A
5 square root of 5
B
10 square root of 10
C
10 square root of 5
D
5 square root of 10
4

Which is the best approximation for the measure of angle ABC ?

A
27.7 degrees
B
62.3 degrees
C
31.7 degrees
D
58.3 degrees
5

What is the value of x ?

A
20 units
B
12 units
C
24 units
D
15 units
6

What is the length of one leg of the triangle?

A
14 square root of 2 units
B
14 units
C
7 square root of 2 units
D
7 units
7

What is the length of line segment BC ? Round to the nearest tenth.

A
22 point 6 in.
B
20 point 5 in.
C
14 point 3 in.
D
21 point 3 in.
8

What is the length of line segment AC ? Round to the nearest tenth.

A
9 point 8 cm.
B
3 point 0 cm.
C
10 point 5 cm.
D
12 point 8 cm.
11

Which triangle is similar to triangle JKL ?

A
triangle MKL
B
triangle KML
C
triangle JKM
D
triangle LJK

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