Question

Perform the operation shown below and leave the result in trigonometric form. [ 7(cos 10° +isin 10°) (6(cos 190° + isi 190°)] a 13(cos 200° + i sin 2009) b. 13(cos 180° + i sin 180) c 42(cos 200° + i sin 200°) d 42(cos 19° + i sin 199)

Answer 1

Hi,

Answer C

Explanation:

7*(cos(10°)+i sin(10°) )*(6*(cos(190°)+i sin(190°))

=(7*6) (cos(10°+190°)+ i sin(10°+190°))

=42* (cos(200°)+i sin(200°) )