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Answer:
C
Step-by-step explanation:
No an equilateral triangle has three 60° angles it has no right (90°) angle. A right angled triangle can be an isosceles triangle but not an equilateral one.
To find the minimum value of n that guarantees an error of no more than 1/30000 in approximating integral 1/x dx from 3 to 4 by the trapezoidal rule with n so the answer to your question is N=71 and i hope you understand my answer.
