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.
In a televized statement on state TV, Russian President Vladimir Putin said that the blackguard assassination on Russia's ambassador to Turkey, who was killed by a gunman on Monday in what Russia dubbed a terrorist act, is obviously a provocation aimed at disrupting the normalization of Russian-Turkish relations and the failure of the peace ...