Help with Trapezium rule please.!!!?

minx

New member
Find approx value for the integral
Sqrt 1 + sinx (The square root sign goes over the 1 and the sinx) with 5 ordinates.
Between Pi/2 and 0.
I have got the strip width to be 0.393 I think but not sure if I should have left it at Pi/2.
 
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