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2 TE 131 131 Let z, = 8 cos i sin 5 5 and z, - 4 cos Hi sin 10 10 Find the following

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2 TE 131 131 Let z, = 8 cos i sin 5 5 and z, - 4 cos Hi sin 10 10 Find the following Write your answers in trigonometric form. Give exact values in your answers (not decimal approximations). (a) 1 72 - 1 ( co= (1) + 1 sin ([D) JT X (b) = (COS + i sin ( D)

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