How to solve the equation 2cos^2 x+sin2x=1...I know that I should put them into the form like cos(x+a), but I don't know what to do with the different angles cuz the first part is x but the second part is 2x
How to solve the equation 2cos^2 x+sin2x=1...I know that I should put them into the form like cos(x+a), but I don't know what to do with the different angles cuz the first part is x but the second part is 2x
You've identified the problem - that one is in terms of 2x and the other in x, and you want them to be the same so you can use Rcos(x+a) (or sin, but you will be able to figure it out when you need to).. So what can you do?
You've identified the problem - that one is in terms of 2x and the other in x, and you want them to be the same so you can use Rcos(x+a) (or sin, but you will be able to figure it out when you need to).. So what can you do?
I know what to do now...Don't know how could I be so stupid before