Tick the correct answer and justify : In ∆ABC, AB = 6 3 cm, AC = 12 cm and BC = 6 cm.
The angle B is :
(A) 120° (B) 60°
(C) 90° (D) 45°
Answer:
(C) 90*
Step-by-step explanation:
We check if the given triangle is a right angle triangle.
As AC is the biggest side, therefore it is the hypotenuse. We check this by using the Pythagoras theorem.
AB^{2} + BC^{2} = AC^{2}AB
2
+BC
2
=AC
2
(6\sqrt{3} )^{2} + 6^{2} = 12^{2}(6
3
)
2
+6
2
=12
2
108 + 36 = 144108+36=144
144 = 144144=144
Hence, it is proved that the given triangle is right angle triangle and angle B being the right angle at 90*
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Answered by
0
Answer:
Tick the correct answer and justify : In ∆ABC, AB = 6 3 cm, AC = 12 cm and BC = 6 cm.
The angle B is :
(A) 120° (B) 60°
(C) 90° (D) 45°
Answer:
(C) 90*
Step-by-step explanation:
We check if the given triangle is a right angle triangle.
As AC is the biggest side, therefore it is the hypotenuse. We check this by using the Pythagoras theorem.
AB^{2} + BC^{2} = AC^{2}AB
2
+BC
2
=AC
2
(6\sqrt{3} )^{2} + 6^{2} = 12^{2}(6
3
)
2
+6
2
=12
2
108 + 36 = 144108+36=144
144 = 144144=144
Hence, it is proved that the given triangle is right angle triangle and angle B being the right
Answered by
3
Step-by-step explanation:
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