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Q4. (a) The diagram shows a triangle ABC. A (ii) 5 cm C 6 cm B The lengths of AC and BC are 5 cm and 6 cm respectively. The area of triangle ABC is 12.5 cm², and angle ACB is obtuse. (i) Find the size of angle ACB, giving your answer to the nearest 0.1°. Find the length of AB, giving your answer to two significant figures.

Q4. (a) The diagram shows a triangle ABC. A (ii) 5 cm C 6 cm B The lengths of AC and BC are 5 cm and 6 cm respectively. The area of triangle ABC is 12.5 cm², and angle ACB is obtuse. (i) Find the size of angle ACB, giving your answer to the nearest 0.1°. Find the length of AB, giving your answer to two significant figures.

Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter2: Right Triangle Trigonometry
Section2.4: Applications
Problem 48PS: Albert lives in New Orleans. At noon on a summer day, the angle of elevation of the sun is 84. The...
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Q4. (a) The diagram shows a triangle ABC. 5 cm (ii) C 6 cm B The lengths of AC and BC are 5 cm and 6 cm respectively. The area of triangle ABC is 12.5 cm², and angle ACB is obtuse. (i) Find the size of angle ACB, giving your answer to the nearest 0.1°. Find the length of AB, giving your answer to two significant figures.
Transcribed Image Text:Q4. (a) The diagram shows a triangle ABC. 5 cm (ii) C 6 cm B The lengths of AC and BC are 5 cm and 6 cm respectively. The area of triangle ABC is 12.5 cm², and angle ACB is obtuse. (i) Find the size of angle ACB, giving your answer to the nearest 0.1°. Find the length of AB, giving your answer to two significant figures.
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