共50条信息
已知\(\alpha \)为锐角,\(\cos \alpha =\dfrac{\sqrt{5}}{5}\),则\(\tan \left( \alpha -\dfrac{\pi }{4} \right)=\)( )
角\(θ\)满足条件\(\sin 2θ < 0\),且\(\cos θ-\sin θ < 0\),则\(θ\)在 ( )
已知点\(P(\sin \alpha ,\cos \alpha )\)在第四象限,则角\(\alpha \)的终边在
点\(A\left(\sin {2018}^{0},\tan {117}^{0}\right) \)在直角坐标平面上位于第 象限.
进入组卷