If cot A = $\frac{n}{(n + 1)}$ and cot B = $\frac{1}{(2n + 1)}$, then what is the value of cot (A + B)?
1). -1
2). 0
3). 1
4). 2
If $sec (3x - 20^{0})$ = $cosec (3y + 20^{0})$, then what is the value of tan (x + y)?
1). 1
2). $\sqrt{3}$
3). $\frac{1}{\sqrt{3}}$
4). $\frac{2}{\sqrt{3}}$
What is the simplified value of $\left[\frac{(tan ^{2}\theta - sin^{2} \theta)}{tan^{2} \theta sin^{2} \theta}\right]$?
1). -1
2). 0
3). 1
4). 2
ABCD is an isosceles trapezium such that $AD\parallel BC$, AB = 5 cm, AD = 8 cm and BC = 14 cm. What is the area (in cm2) of trapezium?
1). 36
2). 44
3). 88
4). 144
If the areas of two similar triangle are in the ratio 5 : 7, then what is the ratio of the corresponding sides of these two triangles?
1). 5:7
2). 25:49
3). $\sqrt{5}$ : $\sqrt{7}$
4). 125:343