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Math 11 Chapter 12
Application of Trigonometry
Test - 8
1.
With usual notations r r1 r2 r3 =
a) Δ/abc
b) abc/Δ
c) Δ
2
d) Δ
2.
In usual notations, r1 =
a) Δ / S – b
b) Δ / S – c
c) Δ/S
d) Δ / S – a
3.
e – radius Corresponding to angle A is
a) Δ / S – a
b) Δ / S
c) Δ / S – b
d) Δ / S – c
4.
In any triangle ABC, Sin A + Sin B / Sin A - Sin B =
a) a + b/a-c
b) 2a + b/a-2b
c) a + c/a-c
d) b + a/b-c
5.
In any triangle ABC, c Cos A + a Cos C =
a) a Cos B
b) c
c) a
d) b
6.
In usual notation 1 + 1 + 1 =
a) 1 / ε r2 r3
b) 1/r
c) Δ/ ε
d) ε/
7.
In any triangle ABC, a Cos B + b Cos A
a) b Cos C
b) c
c) b
d) a
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