d. cos 270° e. tan f. sec (60°)
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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Question
Transcribed Image Text:45⁰
1 √√2
1
45°
The RECHCher the
quadrant where the terminal side
30⁰
2
14
60⁰
Relorence
√3 ring Rei
(-1,0)
(0,1)
y
1
(0,-1)
(cos, sin 0)
X
(1,0)
Coor
cos(45%)
4. Use the above triangles and unit circle to find the exact values of the following common
angles and quadrantal angles:
Transcribed Image Text:d. cos 270°
e. tan
f. sec (60°)
2
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