Q.1.7 Show that

Asin(\\\\omega t+\\\\phi )

(where

A,\\\\omega ,t

and

\\\\phi

are all real numbers) can also be written as:\ Q.1.7.1 B sin(\\\\omega t) + C cos(\\\\omega t) with

B

and

C

real numbers\ Q.1.7.2

De^(i\\\\omega l)+De^(-i\\\\omega l)

, with

D

a complex number

Q.1.7 Show that Asin(t+) (where A,,t and are all real numbers) can also be written as: Q.1.7.1, with B and C real numbers Q.1.7.2 Deil+Deil, with D a complex number