i did the question and i got the same answer but when i looked at their working i just didn't understand why did they use -1.5 (negative 1.5) at the end when solving for lambda.
It is error. I have solved this course book either. Calculate Argument to Radian, π/2 - arctan(-2/3) = 2.15… The signs of Argument in the Graph is exchanged eachother either….
It is error. I have been solved this course book either. Calculate Argument to Radian, π/2 - arctan(-2/3) = 2.15… The signs of Argument in the Graph is exchanged eachother either….