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MSE2183 Assignment 4 Semester 2 2026 – Due 28 August 2026
QUESTION 2: LESSON 7 – TRIGONOMETRY
2.1 Self-Assessment 7.1
Question 2a: cos 150° (3 marks)
cos 150° = cos(180° – 30°) = -cos 30° = -√3/2
(UNISA, 2026, Lesson 7, p. 186) – shows reduction formula for cos(180° – θ)
(Serra, 2008, p. 185) – quadrant values and reductiona
MSE2183 Assignment 4 Semester 2 2026 – Due 28 August 2026
QUESTION 2: LESSON 7 – TRIGONOMETRY
2.1 Self-Assessment 7.1
Question 2a: cos 150° (3 marks)
cos 150° = cos(180° – 30°) = -cos 30° = -√3/2
(UNISA, 2026, Lesson 7, p. 186) – shows reduction formula for cos(180° – θ)
(Serra, 2008, p. 185) – quadrant values and reductiona
MSE2183 Assignment 4 Semester 2 2026 – Due 28 August 2026
QUESTION 2: LESSON 7 – TRIGONOMETRY
2.1 Self-Assessment 7.1
Question 2a: cos 150° (3 marks)
cos 150° = cos(180° – 30°) = -cos 30° = -√3/2
(UNISA, 2026, Lesson 7, p. 186) – shows reduction formula for cos(180° – θ)
(Serra, 2008, p. 185) – quadrant values and reductiona
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