A AA.R New member Joined Mar 16, 2018 Messages 2 Mar 16, 2018 #1 If SinA = 2Cos2A, find A. Can you tell me if it is possible to find A with just this equation and if so please show how you got it.
If SinA = 2Cos2A, find A. Can you tell me if it is possible to find A with just this equation and if so please show how you got it.
D Deleted member 4993 Guest Mar 16, 2018 #2 AA.R said: If SinA = 2Cos2A, find A. Can you tell me if it is possible to find A with just this equation and if so please show how you got it. Click to expand... Yes Hint: cos2(A) = 1 - sin2(A)
AA.R said: If SinA = 2Cos2A, find A. Can you tell me if it is possible to find A with just this equation and if so please show how you got it. Click to expand... Yes Hint: cos2(A) = 1 - sin2(A)
A AA.R New member Joined Mar 16, 2018 Messages 2 Mar 16, 2018 #3 Thanks Subhotosh Khan said: Yes Hint: cos2(A) = 1 - sin2(A) Click to expand... Thanks, It was the last part of a projectiles question and I kept over-complicating it. That hint helped a lot.
Thanks Subhotosh Khan said: Yes Hint: cos2(A) = 1 - sin2(A) Click to expand... Thanks, It was the last part of a projectiles question and I kept over-complicating it. That hint helped a lot.
