Question Text
Question 1 :
If the length of the shadow of a tower is √3 times that of its height, then the angle of elevation of the sun is<br/>
Question 2 :
A ladder 14 m long rests against a wall. If the foot of the ladder is 7 m from the wall, then the angle of elevation is<br/>
Question 3 :
{tex}\frac { { tan }^{ 2 }\theta }{ 1+{ tan }^{ 2 }\theta } {/tex} is equal to<br/>
Question 4 :
{tex}{ cot }^{ 2 }\theta -\frac { 1 }{ { sin }^{ 2 }\theta } {/tex} is equal to<br/>
Question 5 :
(cos θ + sin θ)<sup>2</sup> + (cos θ – sin θ)<sup>2</sup> is equal to<br/>
Question 6 :
If the classes of a frequency distribution are 1-10, 11-20, 21-30, …, 51-60, then the size of each class is<br/>
Question 7 :
If the classes of a frequency distribution are 1-10, 11-20, 21-30,…, 61-70, then the upper limit of the class 11-20 is<br/>
Question 8 :
The measure of central tendency of statistical data which takes into account all the data is<br/>
Question 9 :
Construction of a cumulative frequency distribution table is useful in determining the<br/>
Question 10 :
In a grouped frequency distribution, the mid-values of the classes are used to measure which of the following central tendency?<br/>