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Trigonometry Flashcards | StudBud
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Trigonometry
Trigonometry
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Answers
1
Convert to Polar coordinates. (√8, √8)
(4, π/4)
(8, 8)
(π/4, 4)
(4, 4)
2
Which of the following is the formula for sin?
adjacent/hypotenuse
adjacent/opposite
opposite/adjacent
opposite/hypotenuse
3
Convert -270° to radians
-3π
-3π / 2
-14π / 9
-13π / 9
4
Find the angle
a
° (Hint: use the cosine rule)
101.9
110.5
98.3
104.6
5
Using the chart from the movie, which relationship is not correct
cos (x) = -cos (180-x)
cos (x) = sin (90-x)
cos (x) = cos (180-x)
sin (x) = sin (180-x)
6
Calculate the length BC to three significant figures:
6.22
10.2
4.51
7.95
7
Which is not correctly matched with its value?
sin 45 = 0.707 (√2/2)
tan 45 = 0.707 (√2/2)
cos 30 = 0.866 (√3/2)
cos 45 = 0.707 (√2/2)
8
What is the relationship between the 3 main trig functions?
tan × cos = sin
tan = cos ÷ sin
sin × cos = tan
sin × tan = cos
9
Using the chart from the movie, which relationship is correct
cos (x) = -sin (90-x)
sin2x + cos2x = 1
sin2x - cos2x = -1
sin2x - cos2x = 0
10
Solve x using the sine rule
46.7
26.6
36.5
29.6
11
Which of the following does not have a value of 0.5
cos 120
cos 60
sin 30
sin 150
12
Use the sine rule to calculate
BC
.
13.9 cm
12.2 cm
10.2 cm
20.8 cm
13
Calculate the length AB to three significant figures:
19,.2
4.23
6.22
7.95
14
Convert the rectangular coordinates to polar coordinates
B)
A)
C)
D)
15
Convert the polar coordinates to rectangular coordinates.
B)
C)
A)
D)
16
Trigonometry Question
3/5
4/5
1
5/4
17
Trigonometry
13/5
12/13
5/12
5/13
18
Find the angle of the triangle using trigonometry:
48.03
40.83
33.18
49.17
19
Convert 7π/6 radians to degrees
240
210
150
180
