Right Triangle Trigonometry Answers

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The height of an equilateral triangle is . What is the perimeter of the equilateral triangle?

Question illustration
A
12 units
B
units
Option B
C
24 units
D
units
Option D
2
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In the right triangle below, tanA = 0.45. What is the approximate length of AB?

Question illustration
A
10 units
B
13 units
C
20 units
D
22 units
3

What is the measure of angle B in the figure below?

Question illustration
A
30°
B
45°
C
60°
D
90°
4

In the triangle below, represents which ratio?

Question illustration
A
sinC
B
sinB
C
cosC
D
tanB
5

What is the approximate degree measure of angle A in the triangle below?

Question illustration
A
37.9
B
38.9
C
51.1
D
52.1
6

In the triangle below, which is equivalent to sinA?

Question illustration
A
sinC
B
sinB
C
cosA
D
cosC
7

The side length of an equilateral triangle is 6 cm. What is the height of the triangle?

A
cm
Option A
B
cm
Option B
C
cm
Option C
D
cm
Option D
8

One leg of a right triangle measures 6 inches. The remaining leg measures inches. What is the measure of the angle opposite the leg that is 6 inches long?

Question illustration
A
30°
B
45°
C
60°
D
90°
9

Which equation can be used to find B in the triangle below?

Question illustration
A
tangent B = Eight-tenths
Option A
B
Tangent B = eight-sixths
Option B
C
cosine B = Ten-sixths
Option C
D
Cosine B = ten-eighths
Option D
10

In a right triangle, angle C measures 40°. The hypotenuse of the triangle is 10 inches long. What is the approximate length of the side adjacent to angle C?

A
6.4 inches
B
7.7 inches
C
8.4 inches
D
13.1 inches

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