2010
Mathematics
JAMB
If the area of ΔPQR above is 12√3 cm2, find the value of q?
A.
6 cm
B.
7 cm
C.
8 cm
D.
5 cm
Correct Answer: 6 cm
Explanation
Area of a triangle = 1/2 ab Sinθ 12√3 = 1/2 x 8 x q sin 60 12√3 = 4 x q x √3/2 12√3 = 2q√3 q =12√3/2√3 q = 6
Area of a triangle = 1/2 ab Sinθ 12√3 = 1/2 x 8 x q sin 60 12√3 = 4 x q x √3/2 12√3 = 2q√3 q =12√3/2√3 q = 6THIS WEEK's
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