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**QUESTION**3 (a) (2) b. Linear c.Approx. 145 people [4]

**QUESTION**4 b. Quadratic or exponential Teacher Note: remind learners that if ever asked to describe or state the relationship, they should

**answer**by identifying the function, e.g. linear, quardratic, exponential. [3] Years Number 80 of people infected 200 1 200 2 200 3 200 4 200 5 200 6 20 0. Solutions for the assessment

**3D**

**Trigonometry**1) Angle = 52° 2) Angle = 27.8° Title: Print Layout - Mathster Created Date: 20140105111317Z.

**TRIGONOMETRY**: 2D &

**3D**PROBLEMS 13 APRIL 2015 Section A: Summary Notes Solving two-dimensional problems using the sine, cosine and area rules The sine-rule is used when the following is known in a triangle which is not a right angled triangle: - 2 angles and a side - 2 sides and an angle (not included).

**trigonometry**is a part of pre-calculus, and is related to other pre.