共50条信息
已知角\(\alpha \)的终边与单位圆交于点\({P}(\dfrac{4}{5},\dfrac{3}{5})\).
\(⑴\)求\(\sin \alpha \),\(\tan \alpha \)的值;
\(⑵\)求\( \dfrac{\sin \left(π+α\right)+2\sin \left( \dfrac{π}{2}-α\right)}{2\cos \left(π-α\right)} \)的值.
进入组卷