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These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.

These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.

These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.

These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.

 

01 Hours 30 Minutes

 

80 Marks

 

Calculator NOT allowed

IB MATH AA SL, Paper 1, May, 2021, TZ2, Solved Past Paper

Master the 2021 IB May for Paper 1 Mathematics AA SL with examiner tailored solutions and comments for TZ2

Question 1 [Explained]

Consider a circle with center (O) and a radius (r). Two points, (A) and (B), are positioned on the circle's edge such that the angle (AOB) is equal to (1) radian. The task is to find the radius (r) of the circle, given that the perimeter of the shaded sector formed by (AOB) and points (A) and (B) is (12).

 

The problem focuses on determining the circle's radius based on the specific length of the perimeter of a sector, highlighted by the angle of (1) radian between two points on the circle's circumference. The radius (r) is critical in calculating the circle's characteristics, and here it directly relates to the perimeter of the noted sector.

Question 1 (Figure)
Question 1 [a] [Explanation]

Determine the numerical value of the variable r.

 

This task involves calculating the exact figure for the variable denoted as r. It is a common type of problem where you need to find the measure of a specific element, which in this case, is represented by r.

Video Solution by an IB Examiner

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Question 1 [b] [Explanation]

Let's figure out the exact area of the region that hasn't been shaded. We'll be using the given measurements and characteristics of the shapes involved to compute this area.

Video Solution by an IB Examiner

Nail IB Video