What is the derivative of y tan x?

To find the derivative of the function y tan x with respect to x, we need to apply the product rule of differentiation. The product rule states that if you have a function that is the product of two functions, say u and v, the derivative is given by: (uv)’ = u’v + uv’ In … Read more

Under what circumstances does a plane cut a triangular pyramid to create a quadrilateral cross-section?

A triangular pyramid, also known as a tetrahedron, consists of four triangular faces. When a plane intersects this pyramid, the shape of the resulting cross-section depends on the position and angle at which the plane cuts through the pyramid. For a plane to slice through a triangular pyramid and produce a quadrilateral cross-section, it must … Read more

What does an obtuse angle look like?

An obtuse angle is defined as any angle that measures more than 90 degrees but less than 180 degrees. Visually, you can identify an obtuse angle by its broad appearance; it looks more open and ‘sprawled out’ compared to acute angles, which are sharp and narrow, and right angles, which form a perfect corner at … Read more

What are the factors of the polynomial x² + 20?

To determine the factors of the polynomial x² + 20, we will look for expressions that can multiply to give us this polynomial. Firstly, we notice that x² + 20 does not factor easily into linear factors with real coefficients because it doesn’t equal zero for any real values of x. However, it can be … Read more