SOLUTION: Hello! The question is: If theta is an angle of a right triangle with sin=3/5, please find sec(theta-2pi), cos(-theta), and sin(-theta). I have the answers, I'm just unsure of w

Question 922875: Hello!
The question is: If theta is an angle of a right triangle with sin=3/5, please find sec(theta-2pi), cos(-theta), and sin(-theta).
I have the answers, I'm just unsure of what is meant by sec(theta-2pi).
Thank you for the help!
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
The question is: If theta is an angle of a right triangle with sin=3/5, please find sec(theta-2pi), cos(-theta), and sin(-theta).
***
use x for theta (I don't type very well)
working with a (3-4-5) right triangle.
sinx=3/5
cosx=4/5
..
sec(x-2π)=1/cos(x-2π)
cos(x-2π)=cosxcos2π+sinxsin2π=4/5*1+3/5*0=4/5
sec(x-2π)=5/4
..
cos(-x)=cosx=4/5
sin(-x)=-sinx=-3/5

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