Solve cos(x)=1/2 (All Solutions): Degrees

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This video explains how to find all of the solutions to a basic trigonometric equation using reference triangles and the unit circle.
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Hi,

Given cosx=0 and asked to find all solutions, is it correct to say,

pi/2 + kpi where k is a integer.

I keep seeing solutions of pi/2 + 2kpi and 3pi/2 + 2kpi...

However isn't my solution of pi/2 +kpi still going to find all solutions where cosx=0..?

craig