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Math 11 Chapter 12
Application of Trigonometry
Test - 4
1.
The circle drawn inside a triangle touching all the sides is called ________.
a) semicircle
b) undercircle
c) duecircle
d) in circle
2.
In a right angled triangle, if one angle is of measure 60
o
,then other acute angle is
a) 30
2
b) 60
o
c) 30
o
d) 20
o
3.
The process of finding six unknown elements of a triangle is called the?
a) bisection of triangle
b) solution of triangle
c) vertex of triangle
d) angle of triangle
4.
In elementary geometry, the area of a triangle is half multiplied by base and?
a) height of the triangle
b) bisection of triangle
c) vertex of triangle
d) circumcircle
5.
In any oblique triangle ABC, a
2
= __________.
a) b
2
+c
2
- 2bc sin
b) b
2
+c
2
- 2bc cos
c) b
2
+c
2
+2bc cos
d) b
3
+c
2
- 2bc cos
6.
The value of 28
o
24' = __________ radians.
a) 0.0956
b) 0.4256
c) 0.3956
d) 0.4956
7.
Application of trigonometry is usually applied in the fields of?
a) Trigonmatry
b) Navigation and Astronomy
c) Astronomy
d) Navigation
8.
Half angle formula for sine
a) √(s-b)(s-b)/bc
b) √(s-b)(s+c)/bc
c) √(s-b)(s-c)/bc
d) √(s-b)(c-s)/bc
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