simplifying and proving identities

degrees=(d)theta=(t) alpha=(a) beta=(B) pie(p)squared=(s)

it will make much more sense if you use these.

comment:just do the ones you know you don't have to do all of them.

also write it out on paper in the right way not my way it will make it easier and i just need the work i am given the answers.

1) simplify:cos(s)(t)+csc(s)(t)+cot(s)(t)+sin(s)(t) answer:2csc(s)(t)

2)simplify:sec(s)(t)+csc(s)(t) answer :sec(s)(t)csc(s)(t)

3)simplify:sin(3(p)/2+(t)) answer :-cos(t)

4)simplify:2sin2(t) answer :4sin(t)cos(t)

5)prove: tan(t)-cot(t)/tan(t)+cot(t)=2sin(s)(t)-1

6)prove:1-cos(t)/sin(t)=sin(t)/1+cos(t)

7)prove:1-tan(s)(t)/1+tan(s)(t)=1-2sin(s)(t)