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Math 11 Chapter 12
Application of Trigonometry
Test - 7
1.
When two sides and its included angle is give, then area of triangle is
given by
a) All of these
b) ½ ac Sin B
c) ½ bc Sin C
d) ½ ab Sin C
2.
The circle which passes through the vertices of a triangle is called
a) None of these
b) e-Circle
c) In-Circle
d) Circum Circle
3.
The circle which touches the sides of a triangle internally is called
a) Circum centre
b) Centroid
c) In-Circle
d) e-Circle
4.
The point of Concurrency of the right – bisectors of the sides of a triangle is called?
a) Orthocenter
b) Circum centre
c) In-Centre
d) Centroid
5.
The point of Concurrency of the medians of a triangle is called
a) Centroid
b) Circum centre
c) Ortho Centre
d) In – Centre
6.
The point of Concurrency of the altitudes of a triangle is called
a) Ortho Centre
b) In – Centre
c) Centroid
d) Circum centre
7.
The Circum – radius R of a triangle is given by
a) b / Sin ß
b) c / Sin α
c) 4 abc / Δ
d) abc / 4Δ
8.
The In – radius r of a triangle is given by
a) Δ / S –C
b) Δ / S – b
c) Δ / S
d) Δ / S – C
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