For the given equation ⇒⇒⇒ 
and the given range 0 ≤ x ≤ π
We should note that the zeros of the denominator will be at
cos x = 0
∴
So, the given equation is undefined at π/2
So, <span>the students error is the division by zero.
</span>
See the attached figure which represents the graph of the given equation and we can see it is undefined at π/2
<span /><span />
and the given range 0 ≤ x ≤ π
We should note that the zeros of the denominator will be at
cos x = 0
∴
So, the given equation is undefined at π/2
So, <span>the students error is the division by zero.
</span>
See the attached figure which represents the graph of the given equation and we can see it is undefined at π/2
<span /><span />