Write the complex number in trigonometric form r(cosθ+isinθ)​, with θ in the interval 0°,360°.

Question

- 10 = ? (cos? + i sin?)

Answer 1

This is a negative number with no imaginary part so the angle is180 deg.

-10(cos 180 deg + i sin 180 deg) or -10 cis 180 deg