Question: Trignometric equations

Hi, I have recently started working with Maple. I need some help with solve command.

 

VectorCalculus[`*`](cos(x), sin(y)) = 0

y = VectorCalculus[`*`](2, sin(x))

Now if I run solve on above two equations for values of x,y. I get two solutions x=pi/2 and y=2; x=0 and y-0

General solution for cos(x)=0 is n*pi+pi/2. I require the second value of x=-pi/2 also for my program. Please let me know if there is a way to get the solution x=-pi/2 ad y=2 also in the solutions.

 

Thanks a lot,

Pradeep.

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