If sin ? = -2/3, which of the following are possible?

Question

18. If sin θ =4/5 and is in quadrant 2, the value of tan θ is _-4/3____. <---- my answer. is it correct?

 

3. If sin θ = -2/3, which of the following are possible? Check all that apply.
cos θ = √5/3 and tan θ = 2/ √5
cos θ = - √5/3 and tan θ = 2/ √5
sec θ =3/ √5 and tan θ = -2/ √5
sec θ = -3/2 and tan θ =2/ √5

 

15. There are values of t so that the equation sin t =5/4 holds.
True <---- my answer.
False

Answer 1

18. Yes

15. The value of sine is ≤ 1.