Ask your own question, for FREE!
Mathematics 5 Online
OpenStudy (linda):

find the exact value of cosine 15 by using cos (45-30)

myininaya (myininaya):

cos(45)cos(30)+sin(45)sin(30)

myininaya (myininaya):

sqrt(2)/2 * sqrt(3)/2 +sqrt(2)/2 * 1/2

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: k
3 hours ago 2 Replies 2 Medals
Arriyanalol: "The kittle-cattle hooted and flippertygibbetted all the way down the rofl-cop-cop.
3 hours ago 0 Replies 0 Medals
shoko: if a eat dry wall is that safe
16 hours ago 2 Replies 0 Medals
Arriyanalol: Latto had her babygirl
1 day ago 1 Reply 1 Medal
clllaaaaaire: any tips? the quality isn't the best because I am using this site on my computer
1 week ago 2 Replies 0 Medals
clllaaaaaire: CLOSED
1 week ago 0 Replies 0 Medals
Midnight97: Kinda a roleplay story between me and my friend enjoy... Part one Forgive me for all the screenshots.
1 week ago 2 Replies 1 Medal
StevenisGhost: what type of song should I make next, and will y'all go check out my new song on
4 days ago 6 Replies 2 Medals
Midnight97: My drawing sure changed over the years look at these two pictures from 2024 to no
1 week ago 6 Replies 1 Medal
EdwinJsHispanic: "poem" love is So Beautiful to have. But it's so hard to have. At this point I don't know whether its worth the wait Or if it's just millions of miles to re
2 weeks ago 3 Replies 0 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!