00:01
All right, so for our complex number here, 8 plus 3i, its point on the complex plane is just going to be 8 3, where the value 8 on the real axis and 3 on the imaginary.
00:25
So our point will be about right there for 8 .3.
00:30
Now for the trigonometric form, we need the absolute value r.
00:34
We find by square root of a squared plus b squared, and our a in this case is 8, so we have a squared, and b is 3, so plus 3 squared, that's square root of 64 plus 9, or square root of 73.
01:14
On theta, we know that the tangent of theta is equal to b over 8.
01:21
A.
01:26
And in our case, again, b is 3, and a is 8...