SOLUTION: If sec x = -sqrt10 with 180 degrees less than or equal to x less than or equal to 270 degrees, find the following and write your answer in an exact form. A. Sin(2x) B. Cos(x/

Algebra ->  Trigonometry-basics -> SOLUTION: If sec x = -sqrt10 with 180 degrees less than or equal to x less than or equal to 270 degrees, find the following and write your answer in an exact form. A. Sin(2x) B. Cos(x/      Log On


   

Question 744730: If sec x = -sqrt10 with 180 degrees less than or equal to x less than or equal to 270 degrees, find the following and write your answer in an exact form.
A. Sin(2x)
B. Cos(x/2)
I appreciate all the help. :)
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
If sec x = -sqrt10 with 180 degrees less than or equal to x less than or equal to 270 degrees, find the following and write your answer in an exact form.
A. Sin(2x)
B. Cos(x/2)
***
sec%28x%29=-sqrt%2810%29 (180º ≤ x ≤ 270º)
cos%28x%29=1%2Fsec%28x%29=-1%2Fsqrt%2810%29

..
A.
..
B.
=sqrt%28%28sqrt%2810%29-1%29%2F%282sqrt%2810%29%29%29