The nth term of the sequence  –2, 4, –8, 16,…. Is given by

If  $y=\frac{2\sqrt{{{x}^{2}}+m}}{3N}$ make x the subject of the formula

The sum of the exterior angles of an n – sided convex polygon is half the sum of its interior angles. Find n

If $\sin 3y=\cos 2y$ and ${{0}^{\circ }}\le y\le {{90}^{\circ }}$, find the value of y

Given that $\tan x=1$ where ${{0}^{\circ }}\le x\le {{90}^{\circ }}$ evaluate $\frac{1-{{\sin }^{2}}x}{\cos x}$

A rectangle has length xcm and width (x – 1)cm. if the perimeter is 16cm, find the value of xcm

Simplify $\frac{2}{2+x}+\frac{2}{2-x}$

In the diagram, the tangent MN makes an angle of 55^o with the chord PS. If  O is the centre of the circle, find $\angle RPS$

In the diagram, triangle HKL and HIJ are similar. Which of the following ratios is equal to $\frac{LH}{JH}$