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OpenStudy (anonymous):
Find the exact value of the expression. tan-1 0
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OpenStudy (anonymous):
@Hero @dan815
Vocaloid (vocaloid):
0
OpenStudy (anonymous):
why?
Vocaloid (vocaloid):
tan(x) = sin(x)/cos(x) tan(x) = 0 when sin(x) = 0, and sin(x) = 0 when x = 0
OpenStudy (anonymous):
okay thanks
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OpenStudy (anonymous):
@Vocaloid can you help me with another one?
Vocaloid (vocaloid):
sure
OpenStudy (anonymous):
The given angle is in standard position. Determine the quadrant in which the angle lies. -25°
Vocaloid (vocaloid):
|dw:1443146236180:dw|
Vocaloid (vocaloid):
(remember, for negative angles we go clockwise from Q1
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OpenStudy (anonymous):
so Quadrant 4
Vocaloid (vocaloid):
yes
OpenStudy (anonymous):
Okay thanks, so for positive angles its counter-clockwise?
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