Ask
your own question, for FREE!
Mathematics
17 Online
Prove the identity. show steps please
Still Need Help?
Join the QuestionCove community and study together with friends!
\[\tan(y)={((\sin(x+y))-\sin(x-y))} / {(\cos(x+y)+\cos(x-y)}\]
\[\sin{(x\pm y)}=\sin{x}\cos{y}\pm\cos{x}\sin{y}\]\[\cos{(x\pm y)}=\cos{x}\cos{y}\mp\sin{x}\sin{y}\]\[\frac{\sin{(x+y)}-\sin{(x-y)}}{\cos{(x+y)}+\cos{(x-y)}}=\frac{2\cos{x}\sin{y}}{2\cos{x}\cos{y}}=\tan{y}\]
thank you!!!
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
Countless7Echos:
Ah trying out the whole T.V girl drawing :p (I love drawing eyes)
SnowyBreaks:
You ever get the types of dreams where it feels as if you aren't breathing? And w
laylasnii13:
Poem/diary i wrote I Want Out Iu2019m so tired of screaming into walls. Every fight with my mom leaves something broken and itu2019s not just plates or slam
Countless7Echos:
Aye.. I need actually some help on the shading here.. if the light is from above too I just feel something is off.
12 minutes ago
10 Replies
6 Medals
1 day ago
6 Replies
0 Medals
2 days ago
13 Replies
3 Medals
3 days ago
19 Replies
3 Medals