These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Trump tells Ukrainian politician he won't lift Russia sanctions. The president appears to take a harsher stance on Russia in an unusual private meeting. While President Donald Trump suggested during his campaign that he might ease sanctions against Russia related to its aggression against Ukraine, a Ukranian politician said Trump assured her he would do no such thing.