Problems 17-20 Use the unit circle to find sin heta ,cos heta ,tan heta ,csc heta ,sec heta , and cot heta if possible.
17. heta =-(13pi )/(4)
18. heta =-3pi
Problems 17-20 Use the unit circle to find sin 9,cos,tan ,csc,sec9, and cot if possible. 13Tt 17.0= 18.9=-3T 4