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.
David Cameron has said that fresh sanctions against Russia were part of an effort by the West to ratchet up the pressure on President Vladimir Putin and force him to change course Photo: PA, AP. By Christopher Hope in Warrington. 2:18PM BST 30 Jul 2014.Britain is not going to start World War Three over Russiaâs involvement in Ukraine, David Cameron has said. The Prime Minister compared Russiaâs behaviour in Ukraine to Germanyâs before both break out of the First and Second world wars.Mr Cameron said then that Britain was ânot about to launch a European war, we are not about to send the fleet to the Black Seaâ.But Mr Cameron said the West had to draw a line or Russia would start to put similar pressure on European Union countries on the eastern fringes of the Continent like Romania.r Cameron said then that Britain was ânot about to launch a European war, we are not about to send the fleet to the Black Seaâ. But Mr Cameron said the West had to draw a line or Russia would start to put similar pressure on European Union countries on the eastern fringes of the Continent like Romania.