1.

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A. i = [-0.98 cos⁡(π/2-78.6<sup>o</sup>)] exp⁡(-200t)+0.98cos⁡(1000t+π/2-78.6<sup>o</sup>)
B. i = [-0.98 cos⁡(π/2-78.6<sup>o</sup>)] exp⁡(-200t)-0.98cos⁡(1000t+π/2-78.6<sup>o</sup>)
C. i = [0.98 cos⁡(π/2-78.6<sup>o</sup>)] exp⁡(-200t)-0.98cos⁡(1000t+π/2-78.6<sup>o</sup>)
D. i = [0.98 cos⁡(π/2-78.6<sup>o</sup>)] exp⁡(-200t)+0.98cos⁡(1000t+π/2-78.6<sup>o</sup>)
Answer» B. i = [-0.98 cos‚Äö√Ñ√∂‚àö√ñ¬¨‚àû(‚âà√¨‚àö√ë/2-78.6<sup>o</sup>)] exp‚Äö√Ñ√∂‚àö√ñ¬¨‚àû(-200t)-0.98cos‚Äö√Ñ√∂‚àö√ñ¬¨‚àû(1000t+‚âà√¨‚àö√ë/2-78.6<sup>o</sup>)


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