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.
The region voted heavily for Viktor Yanukovych in the 2010 presidential election, and many people there believe he is the victim of a coup-prompting separatists in Crimea's parliament to vote for joining the Russian Federation and a referendum on secession.rimea is an autonomous republic within Ukraine, electing its own parliament, with a prime minister appointed with approval from Kiev. But now Crimean MPs have appointed a pro-Moscow leader, Sergei Aksyonov, who wants Crimea to unite with Russia, and has called the referendum.