1.

Express the requirement for oscillation in polar form$

A. Aß =1∠360<sup>o</sup>
B. Aß =1∠90<sup>o</sup>
C. Aß =1∠π<sup>o</sup>
D. Aß =1∠270<sup>o</sup>
Answer» B. A‚Äö√†√∂‚àö¬∫ =1‚Äö√Ñ√∂‚àö‚Ć‚Äö√тĆ90<sup>o</sup>


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