SOLUTION: please help me to solve this tanx.cosx - tanx + cosx -1 = 0

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Question 794339: please help me to solve this
tanx.cosx - tanx + cosx -1 = 0
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
tanx.cosx - tanx + cosx -1 = 0
%28sin%28x%29%2Fcos%28x%29%29%2Acos%28x%29-tan%28x%29%2Bcos%28x%29-1=0
sin%28x%29-sin%28x%29%2Fcos%28x%29%2Bcos%28x%29-1=0
cos%28x%29sin%28x%29-sin%28x%29%2Bcos%5E2%28x%29-cos%28x%29=0
sin%28x%29%28cos%28x%29-1%29%2Bcos%28x%29%28cos%28x%29-1%29=0
%28cos%28x%29-1%29%28sin%28x%29%2Bcos%28x%29%29=0
cos(x)-1=0
cos(x)=1
x=0
..
sin(x)+cos(x)=0
sin(x)=-cos(x)
x=3π/4 (In quadrant II where sin>0 and cos<0)