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secondary 3 | E Maths
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I don’t have any idea
Date Posted: 1 year ago
Views: 200
Are you learn about c²=a²+b²-2ab cos C? To prove C = 90°
Or if angle ABC = 90°
AB² + BC² = AC²
AB² + BC²
= 10² + 10²
= 100 + 100
= 200
AC² =14² = 196
THEREFORE, AC is not a diameter
cause if AC is diameter, angle ABC is =90°
Or if angle ABC = 90°
AB² + BC² = AC²
AB² + BC²
= 10² + 10²
= 100 + 100
= 200
AC² =14² = 196
THEREFORE, AC is not a diameter
cause if AC is diameter, angle ABC is =90°
See 1 Answer
done
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clear
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pls revise
"circle theorems"
"circle theorems"
Date Posted:
1 year ago
if AC is the diameter
10² + 10² = 200 ≠ 14² = 169
∴ AC is NOT the diameter of the circle
10² + 10² = 200 ≠ 14² = 169
∴ AC is NOT the diameter of the circle
ok
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