Compute z -20 where z is the complex number 6(cos 70° + i sin 70°). (i) 6²º(cos 40° + i sin 40°) 1 (ii) (cos 40° + i sin 40°) 620 (iii) n (cos 320° + i sin 320°) 620 (iv) Not listed

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A: Given : 630    630°=360°+270°

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A: As mentioned question 10 is solved

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A: Solution is done in step 2

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