Question

Evaluate the expression without the aid of a calculator. arctan 0 arccos 1

Answer 1

@dpaInc

Answer 2

HELP PLEASE!!! :(

Answer 3

tg x = 0
find x:
tg x = sinx/cos x
sinx =0 for x = nPi

Answer 4

just like in inverse functions with logarithms and exponentials, you rewrite what this means in it's inverse form:

\[\huge arctan0=y\Leftrightarrow tany=0 \]
what is y?

Answer 5

0

Answer 6

y=x

Answer 7

is this your question?
\[\huge arctan0 \cdot arcos1 \]????

Answer 8

THEY JUST WANT YOU TO EVALUATE IT

Answer 9

ow... my ears!

Answer 10

virtual ears...

Answer 11

lol sorry my caps key is having issues

Answer 12

ok... so arctan0 = 0 is correct...

Answer 13

yes

Answer 14

arctg 0 = n*Pie
arcos 1 = 2n*Pie

Answer 15

you can do that with arccos1=y ...
you'll need to rewrite it in it's inverse form: cosy = 1 ...what's y?

Answer 16

1?

Answer 17

nope...

Answer 18

arctan is multivalued function....

Answer 19

0 is just one solution...

Answer 20

yes, irealize that @myko, but we're just looking for the principal value for these inverse trig functions..

Answer 21

and the range for arctan is restricted to -pi/2 to pi/2

Answer 22

ok i guess the point is Arctan and arctan.

Answer 23

my bad

Answer 24

i think he just wants the value for arctan0, and not the solutions to the equation 0=arctanx

Answer 25

the equation will have the solutions you pointed out... but yeah, some texts interchange Arctan an arctan without giving a second thought... good point @myko ....:)

Answer 26

so arccos1=y means cosy = 1.... what was y again?