AnswersMathematics IIITrigonometry of General Triangles and Trigonometric Functions

Trigonometry of General Triangles and Trigonometric Functions — Test Answers

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Which function describes the graph?

A
f of x is equal to 3 cosine x plus 3
B
f of x is equal to 3 sine x plus 3
C
f of x is equal to 6 cosine x
D
f of x is equal to 6 sine x
22
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What is the area of triangle PQR ? Round to the nearest tenth of a square unit.

A
111 point 3 square units
B
185 point 4 square units
C
222 point 5 square units
D
70 point 5 square units
23

What is the approximate length of arc s on the circle? Use 3 point 1 4 for pi Round your answer to the nearest tenth.

A
42 point 3 in.
B
14 point 1 in.
C
56 point 5 in.
D
22 point 5 in.
24

To the nearest foot, what amount of fencing is needed to surround the perimeter of the flower bed?

A
33 feet
B
40 feet
C
17 feet
D
50 feet
25

Which of the following best explains the value of sine pi over 3 on the given unit circle?

A
sine pi over 3 is equal to adjacent over hypotenuse is equal to adjacent over 1 is equal to adjacent The length adjacent to the angle is the horizontal distance from the y -axis on the graph.
B
sine pi over 3 is equal to opposite over hypotenuse is equal to opposite over 1 is equal to opposite The length opposite the angle is the vertical distance from the x -axis on the graph.
C
sine pi over 3 is equal to adjacent over hypotenuse is equal to adjacent over 1 is equal to adjacent The length adjacent to the angle is the vertical distance from the x -axis on the graph.
D
sine pi over 3 is equal to opposite over hypotenuse is equal to opposite over 1 is equal to opposite The length opposite the angle is the horizontal distance from the y -axis on the graph.

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