Question

Express the complex number in trigonometric form. -3i

Answer 1

Remember to use trig form the general equation is: r(cos(angle) + i sin(angle))
to find r, take √a^2 + b^2 to get 3 for the angle it would be undefined so thee argument would be π / 2. So your answer is 3(cos(π/2) + i sin(π/2))

Answer 2

Answer:

it is 270 degrees

Step-by-step explanation:

-3i can rewrite as 0+(-3i) then you can draw a graph.(0,-3) locate that point

each quadrant is 90 degrees therefore it is 270