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.
After an emergency Parliamentary session Saturday, Russia approved President Vladimir Putinâs request to send troops into the turbulent nation of Ukraine. The move came after Russia had already started taking hold of Ukraineâs Crimean peninsula, an autonomous parliamentary republic within Ukraine. Crimea has been largely pro-Russia, while other parts of Ukraine would like to be closer to the European Union. Here's a helpful map that explains Ukraineâs âEast-West divide: Wikimedia Commons. As you can see, the west of Ukraine (including the capital of Kiev) is all predominantly Ukrainian-speaking.