SOLUTION: find the exact value of sin(2x) and cos(2x) and the quadrant in which 2x lies, given that sinx=8/17 and x is in the first quadrant
Algebra ->
Trigonometry-basics
-> SOLUTION: find the exact value of sin(2x) and cos(2x) and the quadrant in which 2x lies, given that sinx=8/17 and x is in the first quadrant
Log On
Question 887153: find the exact value of sin(2x) and cos(2x) and the quadrant in which 2x lies, given that sinx=8/17 and x is in the first quadrant Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! find the exact value of sin(2x) and cos(2x) and the quadrant in which 2x lies, given that sinx=8/17 and x is in the first quadrant
------------------
sinx=8/17 --> cos(x) = 15/17
------
sin(2x) = 2 sin(x)cos(x)