Find all the values of 0, where 0'

Find all the values of 0, where 00 , satisfying cos20 = coso , giving your answers correct to the nearest 0.10 . (i) Hence, (iii) Express cosxsinx in the for 11' Rcos(x+a) , where R 20 and giving the value of R and a Find the maximum and minimun values of cosxsinx . Sketch the graph of for Use the graph to determine the number of roots of the equation cosp sin x = 1 2 lying between 0 s x < rt .