OpenStudy (anonymous):

Find the exact real value of arccos (- √2/2)

6 years ago
OpenStudy (eyust707):

What angle would you plug into cos to make it equal -rt2/2

6 years ago
OpenStudy (australopithecus):
6 years ago

OpenStudy (australopithecus):

remember cos = x sin = y

6 years ago
OpenStudy (anonymous):

3pi/4

6 years ago
OpenStudy (australopithecus):

you put an angle into cos or sin you get a coordinate you put a coordinate in arcos, arcsin and you get an angle

6 years ago
OpenStudy (eyust707):

Correct

6 years ago