Question

sin2x/cosx

Answer 1

sin2x=2sinxcosx
therforesin2x/cos2x=
2sinxcosc/cosx=2sinx is answer

Answer 2

Hey @Davidrrp, you know now that sin2x=2sinxcosx. Put that in the place of sin2x!

Answer 3

i know sin2x = 2sinxcosx

Answer 4

@shaik0124: good to be helping, but better not give the complete answer away...

Answer 5

ok

Answer 6

So you have: \[\frac{ 2\sin x \cos x }{ \cos x }\]Remember what the last step was in the other problem?

Answer 7

cancel out on both sides

Answer 8

Yes! So now you know the answer...

Answer 9

i also know cosx = 1/secx

Answer 10

That is also true, but because you've just cancelled out cos x, there is no use for it now. Save it for another occasion!

Answer 11

so then cosx cancels up and bottom?

Answer 12

oooh i see

Answer 13

Just like the other one...
That is what you have learned, dude!
Next time you can do it yourself, no excuse as: "I don't know what to do" ;)

Answer 14

lol i'll try my best.
i still got more though lol

Answer 15

Just keep on practising!