Question

Another value of expression question...

Answer 1

Find the exact value of the expression sin(2tan^-1 (12/5))

Answer 2

\[\huge\rm tan^{-1}(\frac{12}{5})= ??\]
first find arctan and then multiply by 2
hmmm

Answer 3

67.380

Answer 4

wait, multiply that answer by 2?

Answer 5

yep

Answer 6

why

Answer 7

\[\huge\rm sin(\color{red}{2} \tan^{-1}(\frac{12}{5})\]
bec there is 2

Answer 8

hahhh dumb question, because it's 2tan. gotcha.

Answer 9

wait what's so hard about that? can't you just enter that into the calculator?

Answer 10

I think it's meant to be in radian

Answer 11

ok so that equals 134.760

Answer 12

oh alright i get it now

Answer 13

yep you can round it
134.760 ---->135

Answer 14

so we have sin(135ish)

Answer 15

yep right

Answer 16

which is equivalent to what in radian? o.0

Answer 17

3pi/4 ?

Answer 18

exact value i guess they are asking y value (x ,y)
o^_^o order pair

Answer 19

well, they're asking for sine

Answer 20

because it's sine of 135

Answer 21

yes right sin(135) = ??
\[\huge\rm (x,y)---> (\cos,\sin)\]

Answer 22

3pi/4 i think so, \[\frac{ -\sqrt{2} }{ 2 }\]

Answer 23

;D

Answer 24

oh shoot, it's not neg.

Answer 25

it's positive

Answer 26

alphabetical order ( cos , sin)
^ ^

Answer 27

yes right it's positive root 2 over 2

Answer 28

so the exact value would be sq2/2 ?

Answer 29

yes right

Answer 30

yayay :)
ready for next question? *eye twitch

Answer 31

0_o @zepstyle