Question

Math help please?

Answer 1

@Vocaloid @ShadowWolf @Angle @hero

Answer 2

@563blackghost

Answer 3

draw it on an argand diagram

Answer 4

alright, you have

a + bi

arctan(b/a) will give you the angle, sqrt(a^2+b^2) will give you the coefficient (A) for

A(cos(theta) + isin(theta))

Answer 5

would you like to try answer choice A?

1 + i

taking the coefficients gives us

a = 1 and b = 1

can you try calculating arctan(b/a) and r = sqrt(a^2 + b^2)?

Answer 6

artan 1/1
r=sqrt1^2+1^2
= R=sqrt2?

Answer 7

good, and arctan(1/1) is pi/4

so putting it back into polar form gives

sqrt(2)(cos(pi/4) + isin(pi/4))

which conveniently matches answer choice A, got lucky this time

Answer 8

Thanks!