Ask
your own question, for FREE!
Mathematics
6 Online
OpenStudy (anonymous):
Show that sin(θ+π)+sin(θ-π)=-2sinθ is this the first step? sinθcosπ+cosθsinπ+sinθcosπ-cosθsinπ and am i left with 2sinθcosπ?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (raden):
yes, u are right now, u knowed that cos(pi)=-1 right ? so, 2sinθ(-1) = -2sinθ right ?
OpenStudy (anonymous):
wtf??? cos(pi) is -1? omg i din knew that what a waste of 4marks T_T
OpenStudy (raden):
pi is the special degrees in trigonometry, u must know that :p
OpenStudy (anonymous):
is there a website for this? radEn?
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!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
abby2blessed:
How do you guys feel about second chances? Concerning relationships, both romantic and otherwise.
TJH:
love Love, it comes, it goes But what if it stayed stayed in the silence the storm stayed when the world was loud for me it's different; it left when it was
Puffer:
General question what came first the chicken or the egg itu2019s a trick question
Bounty:
the world keeps moving fast and I'm stuck in a time lapse all I need is a minute
Bounty:
can I get so tips on how to start my journey into semi-realism art also on how to
Strawberryluna:
Read my poem. Im not for criticism its a poem I wrote after my breakup: Youu2019ll never understand the way you made me break, I hate that I still love you
abby2blessed:
How do you guys feel about second chances? Concerning relationships, both romantic and otherwise.
4 days ago
0 Replies
0 Medals
TJH:
love Love, it comes, it goes But what if it stayed stayed in the silence the storm stayed when the world was loud for me it's different; it left when it was
5 days ago
4 Replies
3 Medals
Puffer:
General question what came first the chicken or the egg itu2019s a trick question
4 days ago
5 Replies
1 Medal
Bounty:
the world keeps moving fast and I'm stuck in a time lapse all I need is a minute
1 week ago
4 Replies
0 Medals
Bounty:
can I get so tips on how to start my journey into semi-realism art also on how to
2 weeks ago
0 Replies
0 Medals
Strawberryluna:
Read my poem. Im not for criticism its a poem I wrote after my breakup: Youu2019ll never understand the way you made me break, I hate that I still love you
5 days ago
5 Replies
2 Medals