Question

find the exact value of the experssion
cos^-1zero

Answer 1

pi/2

Answer 2

got it?

Answer 3

how did u get that

Answer 4

cos(pi/2)=0 so the inverse means that...its right

Answer 5

you are looking for a number (angle) between 0 and
\[\pi\] whose cosine is 0. that is the one

Answer 6

trig cheat sheet here will find it for you
http://tutorial.math.lamar.edu/cheat_table.aspx

Answer 7

thank u

Answer 8

gotta be last one because of the absolute value signs!

Answer 9

how sure r u

Answer 10

was i wrong ?

Answer 11

no just asking

Answer 12

it does say absolute value right? absolute value cannot be negative. must be above the x axis yes?

Answer 13

@ brackett i was answering her second post, the graph above

Answer 14

see tha range for cos inverse function is [0,pi] , so in this interval cos becomes 0 only at pi/2.

Answer 15

thank u

Answer 16

u still there