Question

prove the identity
1- cos^2theta/1+sin theta =sin theta
help plzz :)

Answer 1

\[\frac{ 1-\cos^2\theta }{1+\sin \theta }=\sin \theta\] like this?

Answer 2

no

Answer 3

\[1-\frac{ \cos^2\theta }{ 1+\sin \theta }=1-\frac{ 1-\sin^2\theta }{ 1+\sin \theta }=1-\frac{ (1-\sin \theta)(1+\sin \theta) }{ 1+\sin \theta }\]

you should be able to finish it from there...

Answer 4

more help
plz

Answer 5

dude... seriously?

Answer 6

so it wel be \[1- 1/1+\sin \]

Answer 7

cancel the common terms

Answer 8

\[1-\frac{ (1-\sin \theta)\cancel{(1+\sin \theta)} }{ \cancel{(1+\sin \theta)} }=1-(1-\sin \theta)\]

Answer 9

thanks :)