Question

The table below shows some values of the curve y = 2cos x and y= 3 sin x.

1. Complete the table for values y=2cosx and y=3 sin x, correct to 1 decimal places.

   x	0	30°	60°	90°	120°	150°	180°	210°	240°	270°	300°	330°	360°
   y=2cos x	2		1	0			-1.7	-1.7	-1		1	1.7	2
   y=3sn x	0	1.5		3	2.6				-2.6			-1.5	0

   On the grid provided draw the graphs of y=2 cos x and y= 3sin x for 0° ≤ x ≤ 360° on the same axis. 
2. Use the graph to find the values of x when 2cos x- 3sin x=0.
3. Use the graph to find the values of y when 2 cos x = 3sin x. 

Answer 1

Filled table, graph and values