Question

What is the rectangular form of (4, 90º)?
Please help ):!!

Answer 1

one way is to draw this on a coordinate plane. have you tried that?

Answer 2

Yes I have but I don't know how to put it in a rectangular form ):

Answer 3

or simply you can use the formulas,
(4, 90) ---> (r, theta)
r=4
theta = 90

x= r cos theta = 4 cos 90 =....?
y= r sin theta = 4 sin 90 =... ?

Answer 4

rectangular form is another way of representing the same number using i or j in some applications

Answer 5

x=0 y=4, 0+4i?

Answer 6

yes!
j4 or i4, whatever u call...

Answer 7

by drawing stuff you see the angle it makes with the x and y axis, then you can move to formulas, but for things that have 90 degree and multiples of it is easier to visualize if you draw it.

Answer 8

Rectangular form is an (x, y) pair.

Answer 9

YESSS! <3 Thank you very much (:

Answer 10

(x,y) = (0,4)

Answer 11

welcome ^_^