59 Find the reference angle for the angle
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:59
Find the reference angle for the angle
Since the given angle is greater than 2n=
we find a positive angle less than 2.
59
6
47
6
35π
6
23π
6
11
Since -
6
12
6
12π
6
47μ
6
12π 35π
6
6
12π 23π
6
6
12π 11x
6 6
12x
6
Once we find a positive angle less than 2n=
angle. The formula varies according to the quadrant in which the angle lies.
lies in quadrant IV, subtract
11л
6
=
RO
The reference angle is
12π
6
π
픔
2
11л
6
12π
we must repeatedly subtract 2n=- until
we use a formula to find the reference
from 2n to find the reference angle.
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