Question

TRUR OR FALSE the range of y=Arccosx is (-pi/2,pi/2). @mathmale @Mertsj @ranga

Answer 1

false, the range is 0 to pi.

Answer 2

BigB: Please look for a graph of y=arccos x. You will see that the value of this function ranges from negative infinity to positive infinity. With this image in mind, try again to answer this question.

Answer 3

Please refer to this site:

http://www.wolframalpha.com/input/?i=y%3Dcot+x

Answer 4

so its false?

Answer 5

Before I answer that, I'd like to understand your reasoning.

Answer 6

graphed it and it seemed false..

Answer 7

so @mathmale

Answer 8

what did you learn from the link I've shared with you?

http://www.wolframalpha.com/input/?i=y%3Dcot+x

Answer 9

nothing because idk why youre putting y=cotx @mathmale

Answer 10

Mea culpa. My mistake. My bad. Wrong function! Sorry.
Have you found a site on the Internet where the graph of y=arccos x is displated?

Answer 11

I meant "displayed," not "displated."

Answer 12

Looking at the illustration I've posted, from wolframalpha.com, what can you learn about the domain and range of the function y=arccos x?

Answer 13

its -1 to 1? so its false?

Answer 14

@mathmale @Mertsj

Answer 15

Yes, it is false.

Answer 16

Good work. Hope you'll use the Internet often and well to find the info you need to solve problems like this one. wolframalpha.com is one of my favorite sites for that purpose.

Answer 17

@Mertsj can with a few others

Answer 18

@mathmale evaluate arccsc2. the choices are {pi/6, 5pi/6} , pi/3 , {pi/6+/-2pin,5pi/6+/-2pin} , {pi/3+/-2pin, 5pi/3+/-2pin}

Answer 19

if the csc is 2 then the sin is 1/2

Answer 20

so whats the answer?

Answer 21

What angle has 1/2 for its sin?

Answer 22

i think its the 3rd one but idk @Mertsj

Answer 23

Yes. Me too