The figure displays a unit circle and an angle of 1 radian. The tick marks on the circle are spaced at every two-tenths radian. Use the figure to find a positive angle whose cosine is - 0.70. 0.8- 0.8 radian Find one positive angle whose cosine is -0.70. 0.6 radian 0.6- 04 radian 0.4- One angle is (Type your answer in radians. Type an integer or a decimal rounded to one decimal place as needed.) 0.2 radian 0.2- 1 radian 0.20406 08

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter3: Radian Measure
Section: Chapter Questions
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3.3.51
Question
The figure displays a unit circle and an angle of 1 radian. The tick marks on the circle are spaced
at every two-tenths radian. Use the figure to find a positive angle whose cosine is - 0.70.
Ay
2.
To 8 radian
0.8-
Find one positive angle whose cosine is -0,70.
0.6 radian
0.6-
0.4 radian
One angle is
(Type your answer in radians. Type an integer or a decimal rounded to one decimal place as
needed.)
0.4-
0.2 radian
0.2
1 radian
020.40.6 0.8
(1)
More
y
D20 Enter your answer in the answer box and then click Check Answer
DAll parts showing
Transcribed Image Text:3.3.51 Question The figure displays a unit circle and an angle of 1 radian. The tick marks on the circle are spaced at every two-tenths radian. Use the figure to find a positive angle whose cosine is - 0.70. Ay 2. To 8 radian 0.8- Find one positive angle whose cosine is -0,70. 0.6 radian 0.6- 0.4 radian One angle is (Type your answer in radians. Type an integer or a decimal rounded to one decimal place as needed.) 0.4- 0.2 radian 0.2 1 radian 020.40.6 0.8 (1) More y D20 Enter your answer in the answer box and then click Check Answer DAll parts showing
3.3.91
Question Help
Because the values of circular functions repeat every 2x, they are used to describe things that repeat periodically. For example, the maximum afternoon temperature in a given city might be modeled
by the formula below. In the formula, t represents the maximum afternoon temperature in month x, with x = 0 representing January, x= 1 representing February, and so on.
XI
t= 85 - 20 cos
The maximum afternoon temperature in February is
(Round to the nearest integer as needed.)
M
ay
020
Enter your answer in the answer box and then click Check
parts
remaining
Transcribed Image Text:3.3.91 Question Help Because the values of circular functions repeat every 2x, they are used to describe things that repeat periodically. For example, the maximum afternoon temperature in a given city might be modeled by the formula below. In the formula, t represents the maximum afternoon temperature in month x, with x = 0 representing January, x= 1 representing February, and so on. XI t= 85 - 20 cos The maximum afternoon temperature in February is (Round to the nearest integer as needed.) M ay 020 Enter your answer in the answer box and then click Check parts remaining
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