x=2n+)pi/2
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The cosine of an angle x is 0 at the following angles:
π/2, 3π/2, 5π/2,...
So, from this you can see that the general solution is
x = (2n + 1)π / 2
Where n is an integer.
π/2, 3π/2, 5π/2,...
So, from this you can see that the general solution is
x = (2n + 1)π / 2
Where n is an integer.
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x=90