1. Show that for all z € [0, π/4], the estimates 1³ 15 3! 5! sin (r) r - + and cos(x) = 1 have error < 0.0005 and < 0.00005, respectively. (In the olden days, via trigonometric identities and reference angles, this allowed people to compute sin and cos of any number with error < 0.001, by just knowing how close it is to the nearest. quarter of . E.g. sin(17) = = -cos (2-17) cos(0.2787) 1-0.27872 +0.2787 -0.961.) 41
1. Show that for all z € [0, π/4], the estimates 1³ 15 3! 5! sin (r) r - + and cos(x) = 1 have error < 0.0005 and < 0.00005, respectively. (In the olden days, via trigonometric identities and reference angles, this allowed people to compute sin and cos of any number with error < 0.001, by just knowing how close it is to the nearest. quarter of . E.g. sin(17) = = -cos (2-17) cos(0.2787) 1-0.27872 +0.2787 -0.961.) 41
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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