What is the trigonometric form of $(- 9 - 2 i)$ $(-9-2i)$ ?

Question

What is the trigonometric form of $(- 9 - 2 i)$ $(-9-2i)$ ?

1 Answer

Impact of this question

1905 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-03-29T12:12:31

$Z = \sqrt{85} (cos 3.36 + i sin 3.36)$ $Z= sqrt85(cos 3.36+isin3.36)$

Explanation:

$r = \sqrt{2^{2} + 9^{2}} = \sqrt{85}$ $r=sqrt(2^2+9^2)=sqrt85$ This is in 3rd quadrant. $/_alpha=tan^-1(2/9) =.22 rad :. theta = 3.14+.22 =3.36 rad$ So in trigonometric form $Z= sqrt85(cos 3.36+isin3.36)$ [ans]

Science

Math

Humanities

... and beyond

What is the trigonometric form of $(- 9 - 2 i)$ $(-9-2i)$ ?

1 Answer

Explanation:

Related questions

Impact of this question

Science

Math

Humanities

... and beyond

What is the trigonometric form of (-9-2i) (−9−2i) (-9-2i) ?

1 Answer

Explanation:

Related questions

Impact of this question

What is the trigonometric form of $(- 9 - 2 i)$ $(-9-2i)$ ?