\"A 8.5 Trigonometric Form ox Please Answer Question f Dwww.webassign.net/web/St

Question

"A 8.5 Trigonometric Form ox Please Answer Question f Dwww.webassign.net/web/Student/Assignment-Responses/last?dep=13205642 4- Need Help? Radlt_1 ITalk to a Tutor 7. +-/1 points LarAT9 8.5.043. My Notes Ask Your Teacher Use a graphing utility to write the complex number in standard form. (Round all numerical values to four decimal places.) 5(cos 145 sin 1450) Talk to a Tutor 8. +-/1 points LarAT9 8.5.075 My Notes Ask Your Teacher Use DeMoivre's Theorem to find the indicated power of the complex number. Write the result in standard form. (Round any numeric values to one decimal place.) [5(cos 3.3 i sin 3.3)14 I'm Cortana. Ask me anything 9:40 PM 5/9/2016

Explanation / Answer

Let Z= 5(Cos 1450+ i Sin 1450)

Cos 1450= -0.8192 ; Sin 1450= 0.5736

Cos is -ve and Sin is +ve because 1450 is in 2nd Quadrant

Z= 5(-0.8192 +i(0.5736))

Z= -4.0958 + i 2.8679

Therefore standard form of 5(Cos 1450+ i Sin 1450) is Z= -4.0958 + i 2.8679

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