Show that sin(x+pi)=-sinx. Show all

Prove the following:[1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx] =[1+sinx]/[(sinx+1)/sinx] =[1+sinx]*[sinx/(sinx+1)]
1. 3 answers
2. asked by Anonymous
3. 965 views
cosx+cosy=a and sinx+siny=b show that sin2x+sin2y=2ab(1-(2/(a^2+b^2))plz plz show step
1. 7 answers
2. asked by maths
3. 1,916 views
Let y = sinx + ztanx,where z is a function of x. If (dy/dx)= z+ cosx, show that (d^2y/dx^2) =-y.I really have no idea how to do
1. 2 answers
2. asked by Mat
3. 422 views
iff(x)=x[x] / sin[x] then show that there is no existence of lim f(x) x>0 2nd prob: show lim (tanx-sinx)/x^3 =1/2 x>0
1. 0 answers
2. asked by ALOKE
3. 450 views
Show that sin(x+pi)=-sinx. Show all of your work.
1. 3 answers
2. asked by Allie
3. 2,145 views
Show that sin(x+pi)=-sinx Show all of your work
1. 1 answer
2. 61 views
Use the derivatives of sinx and cosx to show that d/dx [tanx] = sec^2 and that d/dx [secx]=sec^2xsinx.Hence evaluate ∫ [1 +
1. 0 answers
2. asked by Arisa
3. 473 views
There are two questions of my homework I'm having trouble with.. I think we are supposed to show how they are true. In other
1. 2 answers
2. asked by Laken
3. 1,274 views
prove the identity:(cosx)(tanx + sinx cotx)=sinx+cos(squared)x i need steps to show how i got the answer generally, it is a good
1. 0 answers
2. asked by Stacey
3. 734 views
Mathematics - Trigonometric Identities - Reiny, Friday, November 9, 2007 at 10:30pm(sinx - 1 -cos^2x) (sinx + 1 - cos^2x) should
1. 3 answers
2. asked by Anonymous
3. 805 views