Question

Quick 10 questions

Answer 1

true

Answer 2

judging by the shape of the arccos(x) graph it can only cross each y-value once so this must be false

Answer 3

true

Answer 4

yeah (I can't imagine this one being wrong so :S)

Answer 5

A

Answer 6

good

Answer 7

0

Answer 8

good

Answer 9

12/13

Answer 10

good

Answer 11

C

Answer 12

this is arctan(x) [another memorization based question]

Answer 13

A

Answer 14

yes

Answer 15

true

Answer 16

good

Answer 17

B

Answer 18

good, cosx = 1

Answer 19

2

Answer 20

hm. I'm still only getting 1 value when I graph this, not 100% sure though

Answer 21

is there a second opinion we could get :/

Answer 22

@Shadow

Answer 23

@563blackghost

Answer 24

do you have a finite # of re-takes on this? :S I'm pretty sure it's only 1 solution but I wouldn't want to mislead

Answer 25

Nobody responded , so I think I am just going to put 1 :S

Answer 26

not sure about this one

Answer 27

unit circle, the range of arctan is -pi/2 to pi/2, sin and cos are equal at which angle between -pi/2 and pi/2?

Answer 28

um 1

Answer 29

making pi/4 your sol'n

Answer 30

thanks