Question

Ple

Answer 1

@Kevin

Answer 2

@Visarika23

Answer 3

@Kevin

Answer 4

I'm confused since it has 2 pairs
One of the pairs would be like this :

r = sqrt(4^2 + (-4)^2) = 4sqrt(2)

cos alpha = x/ r = 4/4sqrt(2) = 1/2 sqrt(2)
alpha = arc cos 1/sqrt(2) = 45 degree

Answer 5

One of two pairs --> (4 square root of 2, 45°)

Answer 6

ah so it would be A?

Answer 7

maybe, I don't know how to get (-4 square root of 2, 225°)

Answer 8

? any idea

Answer 9

wait

Answer 10

ok thnx

Answer 11

Hey.. about the first question.. maybe it's B

Answer 12

What's ur answer?

Answer 13

so instead of it being A you're thinking the answer to the first one is B?

Answer 14

and for the second one my answer that I got was this: (5, pi/3 + 2npi) or (-5 , pi/3, +(2n+1)pi)

Answer 15

r = sqrt(4^2 + (-4)^2) = 4sqrt(2)

tan alpha = y/x = -4/4 = -1
alpha = arc tan -1 = 135 degree

Answer 16

r = sqrt(4^2 + (-4)^2) = 4sqrt(2) OR -4 sqrt(2)

tan alpha = y/x = -4/4 = -1
alpha = arc tan -1 = 135 degree OR 315 degree

The answer is B

Answer 17

can u explain to me your about your answer on the second question?

Answer 18

ah ok! and I worked it out in class with my tutor/.... and got that

Answer 19

what is it? your first question?

Answer 20

Sorry I don't understand about your second question

Answer 21

no the second!

Answer 22

@Kevin

Answer 23

@HolsterEmission

Answer 24

How did you get your answer?
and what is 'n' ?

Answer 25

@jhonyy9 @retirEEd @Teddyiswatshecallsme am i right?