We know that sec(x)=\frac{1}{cos(x)}.
So, sec(x)=\frac{1}{cos(x)}=\frac{5}{2} \Rightarrow cos(x)=\frac{2}{5}
From the following trigonometric identity
(sin(x))^2+(cos(x))^2=1
we can...
Type: Posts; User: nicole
We know that sec(x)=\frac{1}{cos(x)}.
So, sec(x)=\frac{1}{cos(x)}=\frac{5}{2} \Rightarrow cos(x)=\frac{2}{5}
From the following trigonometric identity
(sin(x))^2+(cos(x))^2=1
we can...