The positive root of t in the following equation, 4t2 + 7t - 1 = 0, correct to 4 places of decimal, is
The difference between the length and width of a rectangle is 6cm and the area is 135cm2. What is the length?
Show that \(\frac{\sin 2x}{1 + \cos x}\) + \(\frac{sin2 x}{1 - cos x}\) is
