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Mathematics FA Part 1 Chapter 12 Online Test MCQs With Answers
Question # 1
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Question # 2
In a triangle ABC, (s - a)(s - b) = s(s - c), then the angle Γ =
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Question # 3
In triangle the length of the sides are 7, 4√3 and √13. Then the smallest angle is:
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15°
30°
60°
45°
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Question # 4
r
2
=
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Question # 5
In a triangle ABC if a
2
- b
2
+ c
2
= ac then < ß =
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Question # 6
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right angled
equilateral
isosceles
obtuse angled
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Question # 7
r
3
=
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Question # 8
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3:5:2
3:2:1
1:2:3
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Question # 9
In a right isoceles triangle, one acute angle is:
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30°
45°
60°
75°
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Question # 10
In any triangle ABC, law of cosines is:
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Question # 11
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r
1
r
2
r
3
r
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Question # 12
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Question # 13
A circle drawn inside a triangle and touching its sides is known as:
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Question # 14
The in-radius r of a triangle is given by:
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Question # 15
If 2s = a + b +c, then in any triangle ABC:
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none of these
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Question # 16
When two sides and included angle is given, then area of triangle is given by:
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all of these
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Question # 17
If the elevation of the sun is 30°, the length of the shadow cast by a tower of 150m height is:
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none
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