CONCEPTUAL TOOLS	By:  Carl H. Durney and Neil E. Cotter	Phasors
		Phasor<->inverse-phasor
		Example 1

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Ex:            If  find , (i.e., find the phasor)

Ans:

Sol'n:        If we have a cosine, we use the standard identity for phasors:

                  For a sine, we multiply the standard identity by -j (which is the phasor for a sine of magnitude one and zero phase shift):

                  Thus, we have

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                  The above is mathematically correct and works properly in solving problems, but we will apply identities to express the answer in standard form:

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Note:    (We use whichever of +180° or –180° is most convenient.)

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                  Applying the identities:

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