MathematicsTrigonometry (NTSE Stage1 (StateLevel) ScholasticAptitude & Language Comprehension): Questions 12  18 of 48
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Question number: 12
» Mathematics » Trigonometry
Question
In figure, AOC and BOC form a linear pair. Then, the value of x is
Choices
Choice (4)  Response  

a.  40°  
b.  25°  
c.  30°  
d.  15° 
Question number: 13
» Mathematics » Trigonometry
Question
The perimeter of an equilateral triangle whose area is 4
cm ^{2} is
Choices
Choice (4)  Response  

a.  8 cm  
b.  3 cm  
c.  4 cm  
d.  12 cm 
Question number: 14
» Mathematics » Trigonometry
Question
The value of is
Choices
Choice (4)  Response  

a.  2cos ^{2} Θ  
b.  cos 2 Θ  
c.  2 cos Θ  
d.  None of the above 
Question number: 15
» Mathematics » Trigonometry
Question
From the top of a pillar of height 20 m the angles of elevation and depression of the top and bottom of another pillar are 30° and 45°, respectively. The height of the second pillar (in m) is
Choices
Choice (4)  Response  

a.  20
 
b. 
 
c. 
 
d. 

Question number: 16
» Mathematics » Trigonometry
Question
If A + B = 45°
then
is equal to
Choices
Choice (4)  Response  

a.  2  
b.  2  
c.  1  
d.  1 
Question number: 17
» Mathematics » Trigonometry
Question
Two posts are K m apart and the height of one is double that of the other. If from the middle point of the line joining their feet, an observer finds the angular elevation of their tops to be complementary, then the height (in m) of the shorter post is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c.  3K  
d.  2K 
Question number: 18
» Mathematics » Trigonometry
Question
In the given figure, what is the value of x?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
