MathematicsTrigonometry (NTSE Stage2 (NationalLevel) ScholasticAptitude & Language Comprehension): Questions 7  11 of 14
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Question number: 7
» Mathematics » Trigonometry
Question
In the given figure, . Find the value of y.
Choices
Choice (4)  Response  

a.  72° 

b.  79° 

c.  74° 

d.  77° 

Question number: 8
» Mathematics » Trigonometry
Question
Three circles each of radius r units are drawn inside an equilateral triangle of side a units, such that each circle touches the other two and two sides of the triangle as shown in the figure, (P, Q and R are the Centers of the three circles). Then, relation between r and a is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 9
» Mathematics » Trigonometry
Question
Choices
Choice (4)  Response  

a.  secθ + tanθ 

b.  secθ  tanθ 

c.  cosecθ + tanθ 

d.  Question does not provide sufficient data or is vague 

Question number: 10
» Mathematics » Trigonometry
Question
If the length of shadow of a pole on a level ground is twice the length of that pole, then the angle of elevation of the sun is
Choices
Choice (4)  Response  

a.  45° 

b.  30° 

c.  60° 

d.  None of the above 

Question number: 11
» Mathematics » Trigonometry
Question
If then value of x in ∆ABC is
Choices
Choice (4)  Response  

a.  24° 

b.  12° 

c.  30° 

d.  28° 
