Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (anonymous):

Determine the sign of sin five pi divided by four without using a calculator.

OpenStudy (psymon):

Well if we just need the sign of the value....So a full circle is 2pi and we want 5/4ths of that. |dw:1375829196757:dw| So sine refers to a y-coordinate. That being said, if sine is a y-coordinate, is y positive or negative in that quadrant?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
Arriyanalol: i need help
18 hours ago 7 Replies 1 Medal
Arriyanalol: CONGRATS to me
21 hours ago 8 Replies 2 Medals
Legomaster346: What colleges are good that are near Arab Alabama?
1 week ago 5 Replies 0 Medals
Arriyanalol: i need help
1 week ago 6 Replies 2 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!