\(27^0\)
\(28^0\)
\(20^0\)
\(26^0\)
Correct answer is A
Tan\(\theta = \frac{opp}{adj}\)
Tan\(\theta = \frac{56}{110}\)
\(\theta = tan^1(0.5091)\)
therefore, \(\theta\) = 27° ( to the nearest degree)
An equilateral triangle has a side 2 cm. Calculate the height of the triangle.
5cm
\(\sqrt5\)cm
3cm
\(\sqrt{ 3}\)cm
Correct answer is D
using Pythagoras theorem
H = \(\sqrt{ 2^2 - 1^2}\)
= \(\sqrt{ 4 - 1}\)
= \(\sqrt3\)cm
Factorize completely: \(x^2 - (y + z)^2\)
(x - y - z)(x - y - z)
(x + y + z)(x - y - z)
(x + y + z)(x + y - z)
(x + y - z)(x - y + z)
Correct answer is B
\(x^2 - (y + z)^2\)
Using difference of two squares (\(a^2 - b^2 = (a + b)(a - b)|)
⇒ (x + (y + z))(x - (y + z))
⇒ (x + y + z)(x - y - z)
How many students scored at least 3 marks?
44
52
38
18
Correct answer is A
Number of students that scored at least 3 marks = 9 + 1 + 12 + 7 + 5 + 10 = 44
What percentage of the students scored at most 5 marks?
58.5%
63.2%
38.3%
41.5%
Correct answer is A
Number of students that scored at most 5 marks = 12 + 1 + 9 + 6 + 3 = 31
% of student = \(\frac{31}{53} \times 100%\) = 58.5%
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