why solve function does not return answer?

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WAYNE ONG
WAYNE ONG 2021-11-6
Ran in:
syms b
eq1 = 1/tan(b);
sol=solve(eq1)
sol = Empty sym: 0-by-1
the equation above should give answer pi/2 or pi/2+n*pi
but solve doesnt give the answer...
What is the problem with my code?

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