Rewrite with only sinx and cosx. cos 2x - sin x

Eric drew a scale drawing of a country park. the scale he used was 1 inch = 2.5 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing ?

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale

Leonardo wrote an equation that has an infinite number of solutions. one of the terms in leonardo’s equation is missing, as shown below.