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25. Prove the following identities. Use proper form and show one step per line. tan (1-x) a) tan = 1-tan x 1+tan x

25. Prove the following identities. Use proper form and show one step per line. tan (1-x) a) tan = 1-tan x 1+tan x

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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25. Prove the following identities. Use proper form and show one step per line. (1-x) a) tan = b) 2 cos x csc x = 1-tan x 1+tan x sin 2x 1-cos²x
Transcribed Image Text:25. Prove the following identities. Use proper form and show one step per line. (1-x) a) tan = b) 2 cos x csc x = 1-tan x 1+tan x sin 2x 1-cos²x
c) csc²x - 2 csc²x = cos 2x
Transcribed Image Text:c) csc²x - 2 csc²x = cos 2x
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