21. In the diagram, triangles HKL and HIJ are similar. Which of the following ratios is equal to LH/JH?
A. KL/JI B. HK/JK C. JI/KL D. HK/LK
22. In the diagram, the tangent MN makes an angle of 550 which chord PS. If O is the centre of the circle, find < RPS. A. 550 B. 450 C. 350 D. 250
23. Simplify: 2/(2+x )+ 2/(2- x )
A. 4/(4 - x^2 ) B. 8/(4 - x^2 ) C. 4x/(4- x^2 ) D. (8-4x)/(4- x^2 )
24. A rectangle has length x cm and width (x – 1)
cm. if the perimeter is 16 cm, find the value of x. A. 3 1/(2 ) cm B. 4 cm C. 4 1/(2 ) cm D. 5 cm
25. Given that tan x = 1, where 00 < x < 900, evaluate (1- sin^(2 ))/(cos〖 x〗 ).
A. 2 √2 B. √2 C. √(2/2) D. 1/2
26. If sin 3y = cos 2y and 00 < y , find the value of y.
A. 180 B. 360 C. 540 D. 900
27. The sum of the exterior angles of an n-sided
convex polygon is half the sum of its interior
angles. Find n. A. 6 B. 8 C. 9 D. 12
28. What is the length of a rectangular garden whose
perimeter is 32 cm and area 39 cm? A. 25 cm
B. 18 cm C. 13 cm D. 9 cm.
29. If y = 2(√(x^2 + m)/3N), make x the subject of the
formula. A. √(9y^2 N^2 -2m)/2 B. √(9y^2 N^2+ 2m)/2
C. √(9y^2 NT^2- 4m)/2 D. √(9y^2 N^2+4m)/2
30. The nth term of the sequence: -2, 4, - 8, 16, … is
given by A. Tn = 2n B. Tn = (-2)n C. Tn = (-2n)
D. Tn = n2