Mathematics
Senior High
求解🙏
(11,在坐標平面上,點O為原點,點P在第二象限,且OP=5,若已知tan
正向與OP的夾角,則P點坐標為
。
=--
,
為x軸
2
22.
100
14. Σ sin² ko
Σsi
k=1
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