Question 15:
Diagram 6 shows a triangle ABC. Given that the area of triangle ABC is 21 cm2 and ∠BAC is obtuse angle.
Diagram 6
Find
(a) ∠BAC, [3 marks]
(b) the length of BC, in cm, [2 marks]
(c) the length of the perpendicular line from A to BC. [3 marks]
Solution:
(a)
(b)
(c)
Diagram 6 shows a triangle ABC. Given that the area of triangle ABC is 21 cm2 and ∠BAC is obtuse angle.
Diagram 6
Find
(a) ∠BAC, [3 marks]
(b) the length of BC, in cm, [2 marks]
(c) the length of the perpendicular line from A to BC. [3 marks]
Solution:
(a)
(b)
(c)