英语翻译In the xy-plane,the curve with parametric equations x=cos(t) and y= sin(t),0≤t≤π,has length?这是在一个考试题里面出现的,实在不知道怎么翻译了··

英语翻译In the xy plane,the curve parametric equations x=cost.and y=sint.0...忘了写, on the plane还是in the plane 翻译：In the xy-coordinate plane,how many points are a distance of 4 units from the origin? 英语翻译Rectangularity of the axis of the working surface ,relative to the clamping surface in the longitudinal plane and transverse plane 英语翻译two parallel surfaces on the same side of the axis of the test specimen lie in the same plane 英语翻译the graph of the function f is shown in the xy-plane above.When the graph of f is reflected about the x-axis,the result is the graph of the function g.What is the value of g(2)? is,in,plane,the,there,sky,a when where the plane arrive/arrive in The plane for Beijing ()()in fifteen minutes. I fly a plane in the city 英语翻译The plane _______________ ten years 英语翻译1.In the xy-plane,the line with equation y=5x-10 crosses the x-axis at the point with coordinates(a,b).What is the value of 2.If m is the greatest prime factor of 38 and n is the greatest prime factor of 100,what is the value of m+n?那 英语翻译net signed area 是什么就好.上下文是：the definite integral is defined informally to be the net signed area of the region in the xy-plane bounded by the graph of ,the x-axis,and the vertical lines x = a and x = b. they go to hainan 【】A.by plane B.by the plane C.by a plane D.in plane they go to hainan( ) A by plane B by the plane C by a plane D in plane选择. 英语翻译In the xy-coordinate plane,P and Q are different points that have the same y-coordinate and lie on the parabola whose equation is y=x^2-3x-40.What is the x-coordinate of the midpoint of PQ? 英语翻译：五小时后,飞机将要起飞.可不可以翻译成：The plane is going to take off in five hours. The plane arrives____January the fifth in the afternoon.