Express the polar equation \(r=\cos 2\theta\) in rectangular coordinates. Find the maximum height above the \(x\)-axis of the cardioid \(r=1+\cos \theta\text{.}\) Sketch the graph of the curve whose ...

This circle has the centre at the origin and a radius of 1 unit. The point P can move around the circumference of the circle. At point P the \(x\)-coordinate is \(\cos{\theta}\) and the \(y ...

The outer, middle and inner line intensities are related by: 3 : (4sin 2 theta)/(1+cos 2 theta) : 1 meaning the outer and inner lines are always in the same proportion but the middle lines can vary in ...

Sketch the graph of the ellipse \(\ds \frac{x^2}{9}+\frac{y^2}{16}=1\) and determine its foci. Let \(C\) be the conic which consists of all points \(P=(x,y)\) such ...

Their findings, published in Nature Human Behaviour, suggest that theta phase precession, the shift in the time at which specific neurons fire relative to the theta rhythm in brains, contributes ...

The angle that the seam makes with the vertical axis is "theta", so it follows that the component of weight along the seam is (W x cos theta). Along the seam and at the angle " to the vertical ...

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This change follows a rise in financial fraud cases, with several fintech companies reportedly using PAN details to create ...

Bernie Ecclestone called it one of the best drives he's seen: Max Verstappen's win in Brazil, from 17th on the grid, puts a fourth title within reach. Lewis Hamilton said driving Ayrton Senna's ...

Can I get free shipping at COS? Yes, COS offers free delivery on orders over £100. If your order is less than this, standard home delivery will cost £4. Your items should be delivered within 4-5 ...

This circle has the centre at the origin and a radius of 1 unit. The point P can move around the circumference of the circle. At point P the \(x\)-coordinate is \(\cos{\theta}\) and the \(y ...