prove lim x->0 sinx/x=1

prove 1/sinx-sinx=cos^2xcscx

Prove: 1-sinx/1+sinx=sec*2x-2secxtanx+tan*2x

How do I prove that sinx/sinx+cosx=tanx/1+tanx

Prove the following: [1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx] =[1+sinx]/[(sinx+1)/sinx]...

prove: cot^2(x)=cos(x)/(sinx)(tanx)

Prove that if Sinx=5/13 and Siny=12/13, where x and y angles in Q1, then Sin(x+y)=1

Prove that (2√3+3)sinx+2√3cosx lies between -(2√3+15) and (2√3+15)

Prove that sinx=x for x is a real number has only one solution at x=0

Prove that (1+sinx-cosx/1+sinx+cosx)^2= 1-cosx/1+cosx

prove sin(2pi-x)=-sinx

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