9000046501

SubArea: 
Trigonometric equations and inequalities
Level: 
B
Project ID: 
9000046501
Accepted: 
1
Clonable: 
0
Easy: 
1
Identify the optimal first step convenient to solve the following trigonometric equation. Do not consider the step which is possible but does not help to solve the equation. sin⁡x⋅cos⁡x=0
sin⁡2x=0
cos⁡2x=0
substitution sin⁡x=z
sin2⁡x⋅cos2⁡x=0