Using the exponential representation of the sine and cosine functions, (eto + e ) and sine -(*

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Using the exponential representation of the sine and cosine functions,

(eto + e ) and sine -(* - e ) Icose = 2i cose = + e ) and sine -(0 – e

Show that

a. cos2θ + sin2θ = 1

b. d (cosθ ) / dθ = ˆ’sinθ

c. sin (θ + π) = cosθ

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Physical Chemistry

ISBN: 978-0321812001

3rd edition

Authors: Thomas Engel, Philip Reid

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