1. The problem statement, all variables and given/known data My calc class is having me review precalc(which i'm really rusty on...) 21. Find sin θ, sec θ, and cot θ if tan θ = 27 22. Find sin θ, cos θ, and sec θ if cot θ = 4. 23. Find cos 2θ if sin θ = 15 24. Find sin 2θ and cos 2θ if tan θ = √2 25. Find cos θ and tan θ if sin θ = 0.4 and π/2 ≤ θ < π. 26. Find cos θ and sin θ if tan θ = 4 and π ≤ θ < 3π/2. 2. Relevant equations 3. The attempt at a solution I'm not going to ask you to do these for me, but since it's been several years since I've done any of this stuff(that i really do hate!) please refer me to videos / tutorials on how to work with them. My textbook only goes through one problem and that's it. The explanations are not the greatest as well. Thanks alot. I apologize for not giving an attempt but all my attempts are so horribly off it's not even worth showing.