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If tan x-, what is cos 2x, given that 0 < x = Oa) O b) 7 25 Oc) 7/15 Od) - 2/

If tan x-, what is cos 2x, given that 0 < x = Oa) O b) 7 25 Oc) 7/15 Od) - 2/

Advanced Engineering Mathematics
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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If tan x-, what is cos2x, given that 0<x<? O a) // Ob) - 75 Oc) 17/5 25 O d)-3
Transcribed Image Text:If tan x-, what is cos2x, given that 0<x<? O a) // Ob) - 75 Oc) 17/5 25 O d)-3
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