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Math 11 Chapter 12
Application of Trigonometry
Test - 5
1.
A ladder makes an angle of 60
o
with wall at a distance of 6 metres from wall, length of ladder is
a) None of them.
b) 6 m
c) 15 m
d) 12 m
2.
The angle which the ray from an observer's eye to an object when the point of observation is above the level of observer is called __________.
a) None is correct
b) Depression
c) Negative angle
d) Elevation
3.
(S-a)tanα/2
a) r
1
b) a
2
+ b
2
/c
2
c) 4RCos γ/2
d) r,
4.
In the solution of a right angled triangle "Length of one side" and measure of _______ angles are invlolved.
a) reverse
b) right
c) acute
d) abtuse
5.
Escribed radius
a) Δ / s-a
b) Δ / s+a
c) Δ / s-b
d) Δ / s-c
6.
Sum of opposite angles of cyclic quadrilateral is 360
o
.
a) False
b) True
7.
Area of the triangle in which b= 21.6, c = 30.2 and α=52
o
40'
a) 180
o
b) 420 sq unit
c) 259.3 sq units
d) 253 sq unit.
8.
In radius
a) Δ / s
b) Δ / 3s
c) abc / 4Δ
d) Δ / 2s
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