SOLUTION: what is (cos(-x)/secx)+ sin^2(-x) simplified

Algebra ->  Trigonometry-basics -> SOLUTION: what is (cos(-x)/secx)+ sin^2(-x) simplified      Log On


   

Question 292011: what is (cos(-x)/secx)+ sin^2(-x) simplified
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
cos(-x)=cos(x).... sin(-x)=-sin(x) ---> (sin(-x))^2=(-sin(x))^2=(sin(x))^2


(cos(-x)/secx)+ sin^2(-x) = (cos(x)/(1/cos(x))+ sin^2(x) = cos^2(x)+sin^2(x) = 1


Answer: (cos(-x)/secx)+ sin^2(-x) = 1