Calculate the value of Y in the diagram
In the diagram, POR is a circle with center O. ∠QPR = 50°, ∠PQO = 30° and ∠ORP = m. Find m.
Simplify \(\frac{2-18m^2}{1+3m}\)
If \(y = \sqrt{ax-b}\) express x in terms of y, a and b
