Question

Given Z = 5(cos98 + isin98) and W= 3(cos43 + isin43), find and simply Z/W. Round numerical entries in the answer to two decimal places.

Answer 1

This should help, ignore the red box.

Answer 2

Nevermind, I just realized that this doesn't go up to 98

Answer 3

I'll try to find another one.

Answer 4

Thank you!

Answer 5

Okay you can use the calculator in google to fins the sine, cosine and tangent.
The cos of 98 is -0.81928824529 and the sin of 98 is -0.57338187199 so Z is 5(-0.81928824529 + -0.57338187199)

Answer 6

W is 3(0.55511330152 + -0.83177474262)

So it would look like this Z= -6.9633 or just -6.96 and W would be -0.829

Answer 7

Hope this helps.

Answer 8

\[\large\rm Z=r_1(\cos a+i \sin a)\]\[\large\rm W=r_2(\cos b+i \sin b)\]Then,\[\large\rm Z/W=\frac{r_1}{r_2}(\cos[a-b]+i \sin[a-b])\]

Answer 9

Divide the radial lengths,
subtract the angles.

Answer 10

and so... what did you get?